Table 1.
Administrative and baseline characteristics of 11 Nordic cohortsa
| DCH | DNC | MDC | PPS | GOT- MONICA | SDPP | SIXTY | SNAC-K | SALT | SMC | FINRISK | Total | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Recruitment year | 1993–1997 | 1993,1999 | 1991–1996 | 1970–1974 | 1990,1995 | 1992–1998 | 1997–1999 | 2001–2004 | 1998–2002 | 1997 | 1997–2012 | 1970–2012 | |
| Study size | 57,053 | 28,731 | 28,098 | 7,495 | 4,875 | 7,949 | 4,232 | 3,363 | 7,043 | 20,407 | 8,320 | 177,566 | |
| Analytical sampleb | BMI | 54,702 | 26,327 | 27,824 | 5,146 | 2,565 | 7,575 | 3,942 | 2,559 | 6,363 | 17,350 | 8,320 | 162,639 |
| WC | 54,696 | 7,270 | 27,811 | — | 2,562 | 7,565 | 3,897 | — | — | 14,930 | 8,309 | 127,040 | |
| Age (years) | Median | 56 | 50.5 | 57.8 | 51.6 | 46 | 48 | 60 | 72 | 56 | 60 | 51 | 55 |
| (5th, 95th percentile) | (50.0, 64.0) | (44.9, 70.9) | (47.1, 71.4) | (47.6, 54.7) | (27.0, 63.0) | (38.0, 54.0) | (60.0, 60.0) | (60.0, 90.0) | (44.0, 79.0) | (50.0, 79.0) | (27.0, 71.0) | (44.9, 71.9) | |
| Sex (%) | Women | 52.5 | 100 | 60.7 | 0 | 52.1 | 60.7 | 52.1 | 61.5 | 54.8 | 100 | 53 | 65.6 |
| Men | 47.5 | 0 | 39.3 | 100 | 47.9 | 39.3 | 47.9 | 38.5 | 45.2 | 0 | 47 | 34.4 | |
| Educational level (%)c | Low | 30.2 | 0 | 68 | 68.2 | 20.1 | 31.5 | 39.6 | 23.6 | 26.9 | 37.9 | 24.8 | 33.4 |
| Medium | 46.4 | 100 | 17.7 | 20.5 | 50.2 | 38.6 | 32.3 | 39.7 | 36.5 | 34.1 | 53.8 | 47.3 | |
| High | 23.4 | 0 | 14.3 | 11.3 | 29.7 | 29.9 | 28 | 36.8 | 36.6 | 28 | 21.4 | 19.3 | |
| Marital status (%) | Single/ widowers/ never married | 23.2 | 29.6 | 34.8 | 14.2 | 31.5 | 16.5 | 25.8 | 51.6 | 32.3 | 23.9 | 32.4 | 27.2 |
| Married/ cohabitants | 76.8 | 70.4 | 65.2 | 85.8 | 68.5 | 83.5 | 74.2 | 48.4 | 67.7 | 76.1 | 67.6 | 72.8 | |
| Smoking status (%) | Never | 35.5 | 34.1 | 37.9 | 26.7 | 48.4 | 37.2 | 40.1 | 44.8 | 43.5 | 53.6 | 44.1 | 38.6 |
| Former | 28.2 | 30.7 | 33.8 | 33.4 | 23.3 | 36.4 | 38.8 | 40.1 | 36.2 | 23.6 | 29 | 30.3 | |
| Current | 36.3 | 35.2 | 28.3 | 39.9 | 28.3 | 26.4 | 21.1 | 15.2 | 20.3 | 22.7 | 26.9 | 31 | |
| Smoking intensity (g nicotine/day) | Median among smokers | 15.1 | 14.4 | 14 | —f | 15 | 15 | 13 | 10 | 10 | 10 | 11.2 | 14.4 |
| Physical activity (%)d | Low | 51.7 | 7 | 51.4 | 25.3 | 17.6 | 65.8 | 69.2 | 74.7 | 54.8 | 20.5 | 17.5 | 39.5 |
| Medium | 19.5 | 66.4 | 20.6 | 59.3 | 62.5 | 26.5 | 23.3 | 18.5 | 36.2 | 57.7 | 32 | 35 | |
| High | 28.8 | 26.5 | 28 | 15.4 | 19.9 | 7.7 | 7.5 | 6.7 | 9 | 21.8 | 50.5 | 25.5 | |
| Area-level income (%)e | Quartile 1 | 33 | 32.9 | 23.4 | 25.9 | 22.3 | 3.5 | 4.5 | 3.1 | 0.7 | 25.2 | 19.8 | 25.9 |
| Quartile 2 | 22.5 | 26.6 | 21.1 | 22.4 | 15.9 | 5.6 | 8.7 | 0 | 10.5 | 22.6 | 25.9 | 21.1 | |
| Quartile 3 | 16.9 | 24.8 | 26.7 | 24.6 | 21.8 | 21 | 24.2 | 0.2 | 18.5 | 27.1 | 26.5 | 21.9 | |
| Quartile 4 | 27.5 | 15.7 | 28.8 | 27.1 | 40 | 69.8 | 62.6 | 96.7 | 64 | 25.2 | 27.9 | 31.1 |
DCH, DNC, MDC, PPS, GOT-MONICA, SDPP, SIXTY, SNAC-K, SALT, SMC, FINRISK.
Analytical samples based on the main model, Model 2 (nonmissingness in cohort, sex, age, calendar year, educational level, marital status, smoking status, physical activity, and area income); SMC is not included in the railway analysis due to the absence of exposure data.
Low (primary school or less), medium (up to secondary school or equivalent), high (university degree and more).
Low (once a month or less, <1 hour/week), medium (about once a week, ~1 hour/week), high (3× a week or more, >2 hours/week).
Mean household income in the area where the participant lived at baseline, in quartiles for each country.
—, no data.
BMI indicates body mass index; WC indicates waist circumference;DCH, Diet, Cancer and Health cohort; DNC, Danish Nurses Cohort; FINRISK, the National FINRISK study; GOT-MONICA, Multinational Monitoring of Trends and Determinants in Cardiovascular Disease cohort (Gothenburg); MDC, Malmö Diet and Cancer study; PPS, Primary Prevention Study cohort; SALT, Stockholm Screening Across the Lifespan Twin study; SDPP, Stockholm Diabetes Prevention Program; SIXTY the Stockholm Cohort of 60-year-olds; SMC, The Swedish Mammography Cohort; SNAC-K, Swedish National Study of Aging and Care in Kungsholmen.