Table 1.
Distribution of Demographics, Body Composition, Lifestyle Behaviors, and Selected Additional Factors for Participants in the DD2 Cohort at Baseline Enrollment, Denmark, 2011–2023
| Characteristics | DD2 Cohort | Number with Non-Missing Data |
|---|---|---|
| Number of individuals | 11,369 (100.0%) | 11,369 (100.0%) |
| Women | 4697 (41.3%) | |
| Age, years | 61.4 (52.6–68.5) | 11,369 (100.0%) |
| Year of enrollment | 11,369 (100.0%) | |
| 2010–2013 | 4343 (38.2%) | |
| 2014–2016 | 3169 (27.9%) | |
| 2017–2019 | 1229 (10.8%) | |
| 2020–2023 | 2628 (23.1%) | |
| Region of residence at enrollment | 11,369 (100.0%) | |
| Capital Region | 1814 (16.0%) | |
| Central Denmark Region | 2506 (22.0%) | |
| North Denmark Region | 1160 (10.2%) | |
| Zealand Region | 1495 (13.1%) | |
| South Denmark Region | 4394 (38.6%) | |
| Civil status | 11,076 (97.4%) | |
| Single | 1614 (14.6%) | |
| Married/registered partnership | 6783 (61.2%) | |
| Divorced | 1822 (16.4%) | |
| Widow/widower | 857 (7.7%) | |
| Highest educational level | 10,020 (88%) | |
| Primary school/lower secondary school | 3102 (31.0%) | |
| Upper secondary school/short cycle tertiary school | 5002 (50.0%) | |
| Bachelor’s/Master’s/Doctoral degrees | 1916 (19.1%) | |
| Diabetes duration, years | 1.3 (0.4–2.9) | 11,369 (100.0%) |
| Presence of T2DM among immediate family | 6005 (52.8%) | 11,369 (100%) |
| Body composition (women = 4697 [100%]) | ||
| BMI, kg/m2 | 31.6 (27.3–36.4) | 3200 (68.1%) |
| BMI ≥35 kg/m2 | 996 (31.1%) | 3200 (68.1%) |
| Weight, kg | 85.0 (73.0–100.0) | 3526 (75.1%) |
| Weight at 20 years, kg | 60.0 (54.0–70.0) | 3912 (83.3%) |
| Maximum lifetime weight, kg | 93.0 (80.0–110.0) | 4553 (96.9%) |
| Hip circumference, cm | 111.0 (102.0–122.0) | 4553 (96.9%) |
| Waist circumference, cm | 104.0 (94.0–114.0) | 4556 (97.0%) |
| Body composition (men = 6672 [100%]) | ||
| BMI, kg/m2 | 30.5 (27.4–34.5) | 4603 (69.0%) |
| BMI ≥35 kg/m2 | 1051 (22.8%) | 4603 (69.0%) |
| Weight | 97.0 (86.0–111.0) | 5061 (75.9%) |
| Weight at 20 years, kg | 76.0 (70.0–85.0) | 5560 (83.3%) |
| Maximum lifetime weight, kg | 106.0 (94.0–120.0) | 6514 (97.6%) |
| Hip circumference, cm | 107.0 (101.0–114.0) | 6441 (96.5%) |
| Waist circumference, cm | 109.0 (100.0–119.0) | 6445 (96.6%) |
| Resting heart rate, beats/min | 70.0 (64.0–79.0) | 11,033 (97.0%) |
| Days per week with >30 min of physical activity | 11,319 (99.6%) | |
| 0–3 | 5561 (49.1%) | |
| 4–7 | 5758 (50.9%) | |
| Engaged in leisure-time sport activities | 4440 (39.3%) | 11,311 (99.5%) |
| Level of leisure-time physical activity during the past yeara | 11,319 (99.6%) | |
| Sedentary (eg, reading, watching television) | 2031 (17.9%) | |
| Some physical activity at least 4 h/week (eg, walking, cycling, or other light exercise) | 7082 (62.6%) | |
| Moderate physical activity at least 4 h/week (eg, heavy gardening, running, or swimming) | 2119 (18.7%) | |
| Vigorous physical activity several times/week (eg, running or soccer) | 87 (0.8%) | |
| Alcohol consumption >14 units (women) | 94 (2.0%) | 4660 (99.2%) |
| Alcohol consumption >21 units (men) | 550 (8.3%) | 6636 (99.5%) |
| Number of persons with available DDDA data | 9039 (79.5%) | 11,369 (100%) |
| Smoking status | 8137 (71.6%) | |
| Never smoker | 3722 (45.7%) | |
| Former smoker | 2928 (36.0%) | |
| Current smoker, occasionally | 87 (1.1%) | |
| Current smoker, daily | 1400 (17.2%) | |
| Systolic blood pressure, mmHg | 130.0 (124.0–140.0) | 6081 (53.5%) |
| Diastolic blood pressure, mmHg | 80.0 (75.0–86.0) | 6081 (53.5%) |
| Number of persons with available birthweight data | 9531 (83.8%) | 11,369 (100%) |
| Birthweight, grams | 8331 (73.3%) | |
| <3000 | 1685 (20.2%) | |
| 3000–3700 | 4675 (56.1%) | |
| >3700 | 1971 (23.7%) | |
| Number of patients with available podiatry data | 6732 (59.2%) | 11,369 (100%) |
| Contact with podiatrist at DD2 enrollment | 1984 (29.5%) | 6732 (59.2%) |
Notes: Continuous data are presented as medians and quartiles. Count data are presented as n and proportions (%). aSaltin–Grimby Physical Activity Level Scale. All covariate definitions are presented in Supplementary Tables 1–6.
Abbreviations: BMI, body mass index; DDDA, Danish Diabetes Database for Adults.; T2DM, type 2 diabetes mellitus.