Baseline characteristics of development and validation cohorts
| Risk factor | Men | Women | ||||
| Development cohort† | Validation cohorts‡ | Development cohort | Validation cohorts | |||
| Ontario NPHS (N=9177) | Manitoba NPHS (N=4670) | Ontario CCHS (N=12020) | Women NPHS (N=10618) | Manitoba NPHS (N=5229) | Ontario CCHS (N=14445) | |
| Mean/median BMI (kg/m2) | 26.10/25.70 | 26.86/26.31 | 26.12/25.62 | 24.47/23.50 | 25.43/24.59 | 24.98/24.03 |
| Mean age (years) | 44 | 44 | 44 | 46 | 47 | 46 |
| Age <45 (%) | 54.80 | 55.67 | 55.85 | 51.68 | 52.71 | 51.59 |
| Age 45–64 (%) | 30.78 | 29.71 | 31.00 | 29.92 | 27.79 | 31.51 |
| Age ≥65 (%) | 14.42 | 14.63 | 13.15 | 18.39 | 19.51 | 16.90 |
| BMI <23 (%) | 19.48 | 17.79 | 22.23 | 40.39 | 35.89 | 39.29 |
| BMI 23–24 (%) | 22.11 | 20.34 | 21.51 | 19.01 | 16.65 | 17.79 |
| BMI 25–29 (%) | 43.97 | 44.34 | 40.03 | 24.36 | 28.51 | 27.19 |
| BMI 30–34 (%) | 11.31 | 14.40 | 12.74 | 8.50 | 10.55 | 9.47 |
| BMI ≥35 (%) | 2.40 | 2.63 | 3.05 | 2.77 | 3.15 | 4.11 |
| BMI missing (%) | 0.73 | 0.51 | 0.44 | 4.98 | 5.26 | 2.14 |
| Non-white (%) | 11.51 | 10.42 | 16.68 | 10.41 | 10.51 | 16.76 |
| Hypertension (%) | 10.23 | 10.16 | 12.50 | 12.32 | 13.22 | 14.94 |
| Current smoker (%) | 29.67 | 30.76 | 24.78 | 24.48 | 24.40 | 18.97 |
| Physical activity (kcal/day) | 1.86/1.20 | 1.79/1.10 | 1.97/1.30 | 1.62/1.10 | 1.44/1.00 | 1.63/1.10 |
| Heart disease (%) | 4.97 | 4.43 | 5.19 | 4.16 | 4.62 | 5.24 |
| Graduated post secondary school (%) | 81.12 | 73.28 | 82.11 | 81.86 | 73.81 | 81.09 |
| Number incident diabetes (unweighted) | 718 | 272 | 559 | 692 | 258 | 558 |
| % developing diabetes in 9 years | 7.78 | 7.22 | 6.13 | 4.75 | ||
| Age standardised* % developing diabetes in 9 years | 6.67 | 6.55 | 5.59 | 4.27 | ||
| % developing diabetes in 5 years | 4.26 | 4.60 | 3.23 | 3.69 | ||
| Age standardised* % developing diabetes in 5 years | 3.59 | 3.95 | 2.81 | 3.35 | ||
Categorical variables are represented as a proportion (%), and continuous variables are represented as a mean/median.
↵* Standardised to the 1991 Canadian population.
↵† The development cohort refers to the cohort where the Diabetes Population Risk Tool (DPoRT) was created: the Ontario 1996/7 National Population Health Survey (NPHS) linked to diabetes status.
↵‡ The validation cohorts refer to the populations that DPoRT was validated on: the Manitoba 1996/7 NPHS and the Ontario 2000/1 Canadian Community Health Survey (CCHS) both linked with diabetes status.
BMI, body mass index.