Table. Adjusted Mortality Rate Ratios (MRRs) for Cause-Specific Mortality for Individuals With Below-Median Income Compared With Above-Median Incomea.
| Cause of Death | MRR (95% CI) | |
|---|---|---|
| Men | Women | |
| All deaths | 1.59 (1.22-2.08) | 1.51 (1.19-1.92) |
| Substance use disorders | 4.07 (3.00-5.51) | 2.60 (1.88-3.61) |
| Diseases of the respiratory system | 2.79 (2.09-3.74) | 2.58 (1.97-3.39) |
| Diabetes | 2.68 (2.08-3.45) | 2.48 (1.85-3.33) |
| Infectious diseases | 2.40 (1.72-3.35) | 1.83 (1.43-2.34) |
| Ill-defined conditionsb | 2.10 (1.61-2.75) | 1.88 (1.46-2.43) |
| All other diseases | 1.86 (1.32-2.62) | 1.81 (1.28-2.57) |
| Suicide | 1.80 (1.51-2.16) | 1.87 (1.51-2.32) |
| Cardiovascular diseases | 1.78 (1.55-2.05) | 2.08 (1.75-2.47) |
| Diseases of the nervous systemc | 1.74 (1.39-2.18) | 2.05 (1.63-2.59) |
| Lung cancer | 1.65 (1.41-1.92) | 1.44 (1.23-1.69) |
| External causes (injuries excluding suicide and substance use) | 1.56 (1.31-1.85) | 1.74 (1.40-2.15) |
| Malignant neoplasms (excluding lung cancer) | 1.20 (1.12-1.28) | 1.18 (1.12-1.25) |
a
Estimations were based on all residents in Norway in the year 2015, excluding individuals with the lowest 3% income and individuals with immigrant background (2 150 707 persons). The MRR was estimated using a negative binomial count model regressing median income on the total number of deaths during 2015 (in each age, sex, and income combination), adjusted for age (cubic-restricted age splines with 5 knots) and using the log-transformed total-person years as an offset.
b
Symptoms, signs, and abnormal clinical and laboratory findings not elsewhere classified.
c
Including Alzheimer disease and dementia.