Distribution of gender, age and lifestyle by time period and data source
| Time period | Age (years) | Gender (% men) | Smoking (% smokers) | Smoking (g/day among smokers) | Alcohol (units/week) | BMI (kg/m2) | Physical activity† | Fruits and vegetables† |
| 1981– 1990 | ||||||||
| SIC81-87 | 47.7* | 53.1*** | 58.6* | 9.8* | 9.8* | 25.0* | 2.1 | – |
| DNHI87 | 38.2 | 53.8 | 49.2 | 7.5 | 7.9 | 23.5 | – | – |
| DWEC90 | 37.6 | 52.1 | 46.9 | 7.4 | – | 23.5 | – | – |
| 1991–1995 | ||||||||
| SIC91-95 | 54.4* | 52.1*** | 39.9* | 7.2* | 12.5* | 25.9* | 2.4* | 2.6 |
| DNHI91 | 38.6 | 51.5 | 58.4 | 5.3 | – | – | 2.2 | – |
| DNHI94 | 39.0 | 52.2 | 43.6 | 6.7 | 8.7 | 24.0 | 2.2 | – |
| DWEC95 | 38.9 | 51.8 | 40.8 | 6.3 | – | 24.0 | – | – |
| 1996–2000 | ||||||||
| SIC96-00 | 53.4* | 52.5* | 32.3* | 5.5*** | 11.8* | 26.0* | 2.6* | 2.6* |
| DNHI00 | 39.4 | 50.7 | 57.0 ‡ | 8.8‡ | 8.7 | 24.6 | 2.2 | 2.5 |
| DWEC00 | 39.2 | 49.8 | 36.7 | 5.8 | 5.9‡ | 24.4 | 2.6 | 2.7 |
| 2001–2005 | ||||||||
| SIC01-05 | 36.7* | 38.8* | 36.7*** | 5.5*** | 6.4** | 25.6*** | 1.9* | – |
| DNHI05 | 41.2 | 49.5 | 28.1 | 4.4 | 9.5 | 24.9 | 2.3 | 2.6* |
| DWEC05 | 41.5 | 46.1 | 27.6 | 4.2 | 9.7 | 24.9 | 2.1 | 2.7 |
| 2006–2010 | ||||||||
| DWEC10 | 43.5* | 45.1*** | 22.7*** | 2.8*** | 10.2* | 25.4** | 2.5* | 2.8* |
| DNHS10 | 42.6 | 45.3 | 23.0 | 2.7 | 7.9 | 25.3 | 2.3 | 2.7 |
| >2010 | ||||||||
| >2010 DNHS13 | 44.3 | 45.5 | 19.1 | 2.1 | 7.0 | 25.4 | 2.3 | 2.7 |
*p < 0.001 in an ANOVA (continuous variable) or χ2 test (class variable) for each time period.
**p < 0.01 in an ANOVA (continuous variable) or χ2 test (class variable) for each time period.
***p > 0.05 in an ANOVA (continuous variable) or χ2 test (class variable) for each time period.
† Data censored from the final study population due to unrealistic estimates (not included in ANOVA or χ2 tests).
‡ Frequency on a scale of 1–4 physical activity (sedentary activity (≈ no sport/training)/ low/easy waking or biking (≈ 1–2 hours/week)/moderate training (≈ 2–4 hours/week)/hard training/competitive sport (≈ >4 hours/week)) and 1–3 for the frequency of eating fruits and vegetable (never/rarely/1–6 per times per week/daily).
ANOVA, analysis of variance; DNHI, Danish National Health Interviews; DNHS, Danish National Health Survey ; DWEC, Danish Work Environment Cohort; SIC, Social Inequality in Cancer Cohort.