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- Every year, approximately 40,000 people receive specialist healthcare services related to angina or myocardial infarction; 16,000 for heart failure; and 11,000 for stroke.
- One fifth (21 percent) of the entire population currently lives with established cardiovascular disease or with a high risk of developing the disease. Approximately 1.1 million Norwegians use therapeutic drugs to either prevent or treat cardiovascular disease.
- The number of new cases of myocardial infarction per 100,000 inhabitants per year is declining. Of those affected, fewer people are suffering serious myocardial infarction.
- The reduction in smoking and improvements in treatment account for much of the decline in the number of new cases of infarction.
- Among those with low education, a higher proportion experience myocardial infarction than among those with higher education.
- Mortality due to cardiovascular disease has shifted to higher age groups in the population. Half of all deaths occur after the age of 83 among men and after the age of 89 among women.
- The number of people with cardiovascular disease will increase in the future.
About cardiovascular disease
The most frequent cardiovascular diseases are angina pectoris (angina), myocardial infarction, heart failure, and stroke, and these diseases are the topic of this document.
Morbidity is mainly associated with atherosclerosis, a process which results in fatty deposits, narrowing and blockage (blood clots or thrombosis) of the vessel wall.
Mortality and prevalence of cardiovascular diseases are ascertained using statistics from the Norwegian Cause of Death Registry, the Norwegian Cardiovascular Disease Registry and the Norwegian Prescription Database.
Trends in myocardial infarction morbidity are based on research data of hospital discharge diagnoses collected from every hospital in Norway (Sulo, 2013, Sulo, 2018).
Trends in different types of myocardial infarction are based on the Tromsø Health Survey, which uses an infarction registry with validated diagnoses (Mannsverk, 2016), together with results from international research (Rosamond, 2012; Yeh, 2010).
Current situation and trends
In the following, we describe the status and trends in new cases of myocardial infarction and the proportion of people who currently live with cardiovascular disease and/or receive treatment for cardiovascular disease in Norway. This is followed by a discussion of mortality due to these diseases.
Number of people being treated by the health service
The large number of people receiving preventive treatment or living with a chronic cardiovascular disease results in many primary and specialist health services consultations.
Patients in the primary health service:
- In 2016, approximately 515,000 people in the age range 0 – 74 years were in contact with a GP or emergency medical clinic due to cardiovascular disease (Norway Control and Payment of Health Reimbursement Database - KUHR).
Patients evaluated in specialist health services:
- In 2016, just under 40,000 patients were admitted to hospital or received outpatient treatment with a primary diagnosis of myocardial infarction or angina pectoris; see Table 1. Of these, 11,401 patients had acute myocardial infarction, according to figures from the Norwegian Cardiovascular Disease Registry.
- A total of approximately 60,000 people had an outpatient consultation or were admitted to hospital due to ischemic heart disease (myocardial infarction or angina), as either their primary or secondary diagnosis. See also statistics from the Norwegian Cardiovascular Disease Registry’s statistical database.
TABLE 1. Number of patients with outpatient consultation in the specialist health service or admitted to hospital in 2016 for cardiovascular disease. The table shows selected primary diagnoses. Source: Norwegian cardiovascular disease registry, 2016.
Number of patients with primary diagnosis
Acute myocardial infarction (heart attack)
Total myocardial infarction (heart attack) and
*Of these, 11,504 was treated through unblocking of the cardiac veins in the heart.
Therapeutic drug users
The number of people using therapeutic drugs to treat or prevent cardiovascular disease has increased over time. Population growth, an ageing population and improved survival rates for cardiovascular disease are factors that have contributed to this increase.
- The proportion of the population using at least one therapeutic drug to treat or prevent cardiovascular disease has increased from 18 percent in 2005 to 21 percent in 2016. In 2016, there were approximately 1.1 million users of these drugs; see Figure 1.
Figure 1, click to enlarge. Number and percentage of the population receiving at least one drug for the treatment of cardiovascular disease (ATC code C) during the period 2005 to 2016. In 2016, there were approximately 1.1 million users (blue/turquoise curve), which represents 21 percent of the population (purple curve). Source: Norwegian Prescription Database.
The proportion increased in all age groups; see Figure 2a.
- In the age group 70-74 years, two thirds (67 percent) were using drugs to treat or prevent cardiovascular disease in 2016.
- In the age group 40 – 44 years, the proportion was 10% (Source: Norwegian Prescription Database).
The figures include drugs under drug code C, which are primarily used to treat high blood pressure (hypertension) or high cholesterol levels in patients with known cardiovascular disease (secondary prophylaxis) or to prevent cardiovascular disease (primary prophylaxis). Drugs to combat blood clots are not included (ATC code B01), but most people who take such medicines also take at least one cardiac medicine (ATC code C).
Figure 2a. Click to enlarge. Number (dashed lines) and percentage of users of cardiovascular drugs (ATC code C) in the years 2005 and 2016, in five-year age groups. The figures for the oldest age groups underestimate drug consumption, as the Norwegian Prescription Database does not include figures for the number of people treated in institutions (e.g. nursing homes). Datasource: Norwegian Prescription Database.
In particular, many people take therapeutic drugs for high blood pressure and high cholesterol. During the period 2005 to 2016, there was an increase in both the proportion of those using blood pressure drugs (ATC codes C02, C03, C07, C08 and C09) and the proportion using cholesterol-lowering drugs (ATC code C10).
- Antihypertensive drugs: In the age group 70-74 years, 57 percent used such drugs in 2016, while in the group 40-44 years, the proportion was 7 percent; see Figure 2b (Source: Norwegian Prescription Database).
- Cholesterol-lowering drugs: the proportions in 2016 were 40 percent and 3 percent respectively in the group 70-74 years and 40-44 years; see Figure 2c (Source: Norwegian Prescription Database).
Additional figures 2b and 2c: Proportion using cholesterol-lowering and antihypertensive drugs
The proportion of the population using blood pressure drugs and cholesterol-lowering drugs increased during the period 2005 to 2016.
Figure 2b, click to enlarge: Percentage of population using blood pressure-lowering drugs for the treatment of high blood pressure in 2005 and 2016. The figures for the oldest age groups underestimate drug usage, as the Norwegian Prescription Database does not include figures for those receiving treatment in institutions (e.g. nursing homes).
The figures include the drug codes C02 -Antihypertensives, C03 - Diuretics, C07 - Beta blocking agents, C08 - Calcium channel blockers, C09 - Agents acting on the renin-angiotensin system. These codes are mainly used (over 70 percent according to estimates prepared by the Norwegian Prescription Database) to treat high blood pressure (primary/secondary prophylaxis). Datasource: Norwegian Prescription Database.
Figure 2c, click to enlarge: Percentage of population using cholesterol-lowering drugs in 2005 and 2016. The figures for the oldest age groups underestimate drug usage, as the Norwegian Prescription Database does not include figures for those receiving treatment in institutions (e.g. nursing homes). ATC code C10 is included. Datasource: Norwegian Prescription Database
Decline in number of new cases of myocardial infarction per year
The number of new cases of myocardial infarction per 100,000 inhabitants has declined from 2001 to 2014: a decline of 29 percent for men and 32 percent for women of all age groups combined (Sulo, 2018).
See Figures 3a and 3b, which show the trend in new cases of myocardial infarction for men and women in different age groups. As the figures show, the number of cases per 100,000 per year has decreased.
Figure 3a (men) and 3b (women). Click to enlarge. New cases of myocardial infarction, different age groups. Age-adjusted rates per 100,000. The decrease is most evident for men. Source: CVDNOR project, Norwegian Institute of Public Health and University of Bergen.
In the youngest age groups in the age range 25 to 44 years, fewer people are suffering a first-time infarction, but this age group has also shown a positive trend. New data indicates that also this age group is exhibiting a positive trend. During the period 2009 to 2014, the decrease was 5.3 percent per year for men and women combined; see Figure 6 (Sulo 2018).
Additional Figure 4 shows new cases of myocardial infarction in the age group 25-44 years. Age-adjusted rates per 100,000. Source: CVDNOR project, Norwegian Institute of Public Health and University of Bergen.
More men are affected
In all age groups, we can see that more new cases of myocardial infarction concern men than women, measured per 100,000 inhabitants per year. A study from the Tromsø survey analysed whether risk factors such as blood pressure and cholesterol could explain these gender differences, but found no satisfactory explanation (Albrektsen, 2016).
More people living with cardiovascular disease
The number of people living with cardiovascular disease among the population depends on a number of factors, including the prevalence of risk factors, the number of new people affected, and the age at which the disease first occurs. In addition, the number of people living with cardiovascular disease reflects the effectiveness of the treatment, with improvements in treatment resulting in more people surviving the disease and fewer dying prematurely.
Today, many people live with a cardiovascular disease or with risk factors such as high blood pressure, high cholesterol and/or diabetes. This is reflected in the high number of individuals taking therapeutic drugs: see Figures 2a-c above.
The number of people with cardiovascular disease will increase in the future
The decrease in the number of new cases of myocardial infarction in recent decades has been outweighed by a higher absolute number of elderly people in the population. In the years ahead, it is expected that:
- Both the proportion and number of people living with cardiovascular disease will increase. One fifth (21 percent) of the entire population is currently living with established cardiovascular disease or at a high risk of developing such a disease, assessed on the basis of using at least one cardiovascular drug.
- Patients will become older. Because other diseases also increase with age and are treated more effectively than before, patients with cardiovascular disease will, increasingly, also have other health problems.
The causes of increased prevalence of cardiovascular disease are:
- The population is ageing. Most people who suffer an infarction are over 60 years of age. The number of new cases of cardiovascular disease is expected to increase as the post-war generation age. By 2025, all the cohorts born during the period 1945 to 1955 will have passed 70 years of age.
- A relatively higher proportion of the population suffer less severe myocardial infarction or other cardiovascular disease, thereby increasing the years living with a cardiovascular disease (Mannsverk, 2016). A few years ago, many of these patients would have died.
The survival rate for stroke has also improved (NIPH, 2017).
Mortality: sharp decline
Mortality for cardiovascular diseases in Norway peaked in 1970 and has since declined; see Figures 5a and 5b, which show the mortality for myocardial infarction and other ischemic heart diseases and stroke from 1970 to 2016.
The decline is particularly marked for myocardial infarction and other ischemic heart diseases in the oldest age group over 75 years; see Figure 5a. There was also a decline in the age group 45-74 years.
From 2000 through to the present day, mortality for myocardial infarction and other ischemic heart diseases has more than halved in the population.
Figure 5a. Click to enlarge.. Number of deaths from myocardial infarction and other ischemic heart diseases per 100,000 inhabitants per year for men and women. The figure shows age-standardised rates for the age groups 0-74 years and 75 years +. Data source: Norwegian Cause of Death Registry. See the table and more details in Norhealth’s statistical database.
Men have higher mortality due to myocardial infarction and other ischemic heart diseases than women. Gender differences regarding mortality have decreased since 2000. In 2016, there were minor gender-based differences in the age group 45-74 years, but there is still a major difference in the age group over 75 years; see Figure 5a.
As regards stroke, there is a minor difference between the genders; see Figure 5b below.
Figure 5b. Click to enlarge. Number of deaths due to stroke per 100,000 inhabitants per year for men and women. The figure shows age-standardised rates for the age groups 0-74 years and 75 years +. Data source: Norwegian Cause of Death Registry. See the table and more details in Norhealth’s statistical database.
Cardiovascular diseases have long been the group of disease which causes the most deaths when we consider all age groups combined. Today, cancer is almost as frequent a cause of death as cardiovascular disease. See also the section on disease burden.
As fewer people than before die from cardiovascular disease in the younger age groups, the deaths are "delayed” to the older years. Table 2 shows that the median age of death rose by more than two years from 2000 to 2016.
Among those who died due to cardiovascular disease in 2016, more than one in three deaths were due to myocardial infarction, and almost one in four deaths were caused by stroke.
Table 2. Median age of death caused by cardiovascular diseases in Norway in 2000 and 2016. 'Median age' means that half of people died before and half after this age. 'Interquartile variation' is the age range for the middle 50 percent of deaths (25-75 %). Source: Norwegian cause of death registry.
73.0 - 85.6 years
72.4 - 88.9 years
79.8 - 89.8 years
82.7 - 93.3 years
Differences in mortality between counties and health regions
Historically, northern Norway (particularly Finnmark) has had higher cardiovascular mortality than the national average. Mortality has been lowest in Western Norway. These differences are now much less marked than they were earlier. Figure 6 below shows the trends for men and women separately in the country as a whole and in the health regions.
Figure 6. Click to enlarge. Mortality for all cardiovascular diseases combined, age group 30-74 years in the country and in different health regions. Shown for men and women. Data source: Norwegian Cause of Death Registry. Supplementary figure 6a (Norwegian) shows both genders combined.
Causes of the decline in mortality
Causes of the decline in mortality rate due to myocardial infarction and other ischemic heart diseases:
- Reduction in risk factors: The proportion of smokers has decreased markedly; see Norhealth.no and the report on intoxicants in Norway in 2016 for figures before 1997. In addition, results from both the Tromsø survey and the Health Survey in Nord-Trøndelag (HUNT) indicates that both cholesterol and blood pressure levels have fallen (Hopstock 2015; Hopstock 2017; Krokstad, 2011). These are key risk factors as regards myocardial infarction (Manssverk, 2016). The overall change in risk factors for myocardial infarction during the period 1994 to 2008 explained 66 percent of the decline in new cases of myocardial infarction, according to figures from the Tromsø survey (Mannsverk, 2016).
- Fewer people suffering from severe heart disease: A higher proportion of patients who receive treatment for myocardial infarction are suffering from less severe infarctions. The proportion of patients with a severe infarction (and therefore high mortality) fell during the period 1995 to 2010, according to figures from the Tromsø survey (Mannsverk, 2016). This may be due both to better prevention and the fact that myocardial infarctions are being identified at an earlier stage as a result of better diagnostic methods (Mannsverk, 2016).
- Medical and technological advances such as new drugs for treatment and primary and secondary prevention, better non-drug treatment methods, such as unblocking of the cardiac veins in the heart, and improved logistics for faster emergency medical treatment have undoubtedly been key factors behind the decline in mortality due to cardiovascular disease.
- Higher survival rates. Fewer people die of myocardial infarction both in and outside hospitals. This applies to all age groups. The trend towards more people suffering less severe heart disease is a key part of the reason why mortality has fallen in every age group (Mannsverk, 2016; Yeh, 2010).
Social health differences
There are major educational differences in the number of new cases of acute myocardial infarction. Analyses of figures from the CVDNOR project from the period 1994 to 2009 have shown that individuals with low education are more likely to suffer myocardial infarction and more likely to suffer a fatal myocardial infarction than those with a high education (Igland, 2014, Igland 2014).
Mortality has declined in all education groups, but the gap between those who have completed only a lower secondary education and those who have any college or university education is still considerable; see Figures 9a and 9b.
As the figures show, there has been a particularly steep decline in mortality due to cardiovascular disease among individuals with a high education. The decline has not been as marked in the other education groups. This also applies to other diseases where smoking is an important risk factor, such as COPD and lung cancer (Strand, 2014).
People with a high education tend to smoke less, be more physically active and have lower blood pressure and obesity rates compared with those with a low education. This is according to figures up to 2008 from the Health Survey in Nord Trøndelag (HUNT) and the Tromsø survey (Eggen 2014; Ernstsen 2012). These education-related differences in risk factors are a major factor in explaining the education-based differences in mortality due to myocardial infarction (Strand, 2004).
Figure 7a. Men. Click to enlarge. Difference in premature death between men with a short and a long education. The differences are shown for seven causes and five time periods. CVD = cardiovascular diseases.
The figure shows the number of deaths per 100,000 per year in the age group 45-74 years (premature deaths) during the period 1961 to 2009. The mortality rates are age-adjusted. The total height of the columns represents the absolute difference in total mortality. Source: Figure 1 in Strand (2014) BMC Public Health.
Comment regarding Figure 7a: It is apparent that the inequality between the education groups overall peaked during the 1990s. It is also apparent that several diseases create the differences (see the colour codes). During the 1960s, there was no clear primary cause. During the subsequent ten-year period, it was mortality due to cardiovascular disease which led to the steadily increasing inequalities between the education groups. During the 2000s, differences in cardiovascular mortality remained significant, but were less marked than during the previous decade.
Figure 7b. Women. Click to enlarge. Difference in premature death between men with a short and a long education. The differences are shown for seven causes and five time periods. CVD = cardiovascular diseases. The figure shows the number of deaths per 100,000 per year in the age group 45-74 years (premature deaths) during the period 1961 to 2009. The mortality rates are age-adjusted. The total height of the columns represents the absolute difference in total mortality. Source: Figure 1 in Strand (2014) BMC Public Health.
Comment regarding Figure 7b: It is apparent that the difference between the education groups overall peaked during the 2000s. It is also apparent that several diseases create the differences (see the colour codes). During every ten-year period, it was mortality due to cardiovascular disease which led to the considerable inequalities between the education groups. During the 2000s, the importance of death due to cardiovascular disease has declined slightly. However, the importance of lung cancer and COPD has increased.
Heart disease, COPD and lung cancer are diseases where smoking is a key risk factor. Different smoking habits within low- and high-education groups are likely to be a particularly important factor behind the social inequalities in mortality in Norway (Mackenbach, 2008; Mackenbach, 2016; Strand, 2010; Strand, 2014). A decrease in smoking will therefore help to improve public health, particularly in groups with a low education.
Cardiovascular diseases in the Sami population
The SAMINOR health survey was conducted in municipalities with Sami, Kven and Norwegian populations in 2003-2004, with 61 percent of those invited taking part. The data on the prevalence of cardiovascular disease is self-reported.
- There were no differences between those with Sami and non-Sámi backgrounds as regards the proportion with previous myocardial infarction and stroke (Eliassen, 2016; Eliassen, 2015).
- A higher proportion of Sámi than non-Sámi reported angina pectoris and chest pain (Eliassen, 2014).
- The known risk factors for cardiovascular disease were at approximately the same level among the Sámi and non-Sámi populations (Eliassen, 2015).
Cardiovascular diseases among immigrants in Norway
There is considerable variation in risk between immigrant groups. Some immigrant groups in Norway are at lower risk of suffering cardiovascular disease than the population as a whole, while other groups are at greater risk:
- Immigrants from South Asia (India, Pakistan, Bangladesh, Sri Lanka, Nepal, Bhutan and Myanmar) are at considerably greater risk of suffering both myocardial infarction and stroke compared with the ethnic Norwegian population (Rabanal, 2015).
- Immigrants from the former Yugoslavia are also at greater risk of suffering myocardial infarction. Men in this group are also at greater risk of stroke (Rabanal, 2015).
- Immigrants from East Asia are at less risk of contracting cardiovascular disease than the ethnic Norwegian population (Rabanal, 2015).
- As regards risk factors, in many immigrant groups, few people have elevated blood pressure and few smoke, particularly among women. This is offset by an increased tendency to be overweight and physically inactive, as well as a greater tendency to develop diabetes, among the same groups (Kumar, 2009; Rabchannel, 2013).
See the chapter: Health in the immigrant population
Internationally: Norway on a par with the Mediterranean countries as regards mortality
During the 1970s, cardiovascular mortality in Norway was among the highest in the world. This situation has changed dramatically, and Norway is now on a par with the Mediterranean countries. See Figures 8a and b, which present a comparison between certain European countries for the age group under 65 years.
Figure 8a: Men. Mortality for ischemic heart disease in five European countries, men 0-64 years. Source: WHO-HFA database. NOTE: The figure uses a different scale for women than for men.
Figure 8b: Women. Mortality for ischemic heart disease in five European countries, women 0-64 years. Source: WHO-HFA database.
Mortality due to cardiovascular diseases is falling in most European countries, but remains considerably higher in central and eastern Europe than elsewhere in Europe (Nichols, 2012).
Globally, one in four deaths is due to myocardial infarction or stroke. On a global scale, myocardial infarction and stroke are the two principal causes of death, years of life lost and loss of disability-adjusted life years (DALY) (Lozano, 2012; Murray, 2012). (GBD 2015 DALYs and HALE Collaborators, 2016; GBD 2015 Mortality and Causes of Death Collaborators, 2016).
Risk factors and prevention
Risk factors for cardiovascular disease have been summarised by the World Health Organization (WHO, 2011). The Norwegian Directorate of Health has followed this up in the National guidelines for the prevention of cardiovascular diseases (Directorate of Health, 2017).
The key risk factors are:
- tobacco smoking
- high blood pressure
- high cholesterol
- diet: a diet low in sugar, low in red meat, and with frequent consumption of fish, white meat, fruit, vegetables, legumes, nuts and olive oil led to lower prevalence of cardiovascular disease in a study (Estruch, 2013; Mozaffarian, 2016).
- low level of physical activity
- high alcohol consumption increases the risk of high blood pressure and stroke, while it is still debated whether regular low consumption can provide protection against myocardial infarction (Lidal, 2013).
- family history/hereditary conditions
- high age
- male sex
- ethnicity, see the separate section above
When multiple risk factors occur simultaneously, they often increase the risk by far more than their sum would imply (Selmer, 2017). See the NORRISK 2 risk model (Norwegian) and the NORRISK figure (English).
The risk factors for stroke are much the same as for myocardial infarction, but with this disease, blood pressure and atrial fibrillation play a more important role, while blood cholesterol is less important (Vangen-Lønne 2017). Smoking is a very important risk factor for both stroke and myocardial infarction.
As regards heart failure, the main risk factors are previous myocardial infarction, high blood pressure and heart valve disease, atrial fibrillation, diabetes and obesity.
Cardiovascular diseases remain a major public health problem, even though there has been a positive trend in mortality and a decline in the number of new cases (per 100,000 inhabitants per year) in age groups over 45 years. Many people live with symptoms or illness, and diagnoses, treatments and check-ups consume a lot of the health service’s resources.
Social inequalities in cardiovascular diseases indicate that we face challenges in this regard too, yet there are also opportunities as regards prevention. Inequalities between education groups are mainly due to higher levels of risk factors in groups with a lower socio-economic status (Strand, 2004).
Among efforts aimed at prevention, instruments targeted at the entire population, such as the Smoking Act, will help to reduce social inequalities in health. There is likely to be considerable untapped potential in other structural interventions that can improve people’s diet and make the population more active.
Norway has signed up to the WHO’s goals to combat non-infectious diseases. The aim is to reduce premature deaths (before 70 years) caused by non-infectious diseases by 25 percent by 2025, compared with 2010. ‘Non-infectious diseases’ is an umbrella term for cardiovascular diseases, cancer, diabetes and chronic lung disease. These four groups of diseases have a number of common risk factors: tobacco use, poor diet, physical inactivity and harmful alcohol consumption. There was a decrease of 18 percent in such premature deaths during the period 2010 to 2015. Norway is on track to achieving the goal of a 25 percent reduction by 2025.
In Norway, the positive trend in the population as regards the risk factors of smoking, cholesterol and blood pressure has to some extent been counteracted by the increase in prevalence of overweight and obesity (2016).
Cite this article as: Cardiovascular diseases in Norway. In: Public Health Report - Health Status in Norway [online document]. Oslo: Institute of Public Health [updated (insert date); read (insert date)]. Available from: (insert link)
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About this page
Authors: Inger Ariansen (chair of the writing group), Randi Selmer, Sidsel Graff-Iversen, Grace M. Egeland and Solveig Sakshaug. Thanks go to Maja-Lisa Løchen of the University of Tromsø for reading through this chapter.
Updates: Updated in April 2018 and then again on 6 and 9 August 2018, update to the section on "decline in new cases of myocardial infarction".
English version published 1. August 2019. New figures 5a and b on mortality for age groups 0-74 years (in stead of 45-74) and 75 years+ published.