Table 2. Crude risk ratios (RR) with 95% confidence intervals (95% CI) and age-adjusted RR (95% CI) of T2DM in relation to a number of co-variates and exposure variables.
| RR crude (95% CI) | p-value | RRage-adjusted (95% CI) | p-value | |
| Age (years) | 1.04 (1.02, 1.06) | 1.2e-4 | – | – |
| BMI (kg/m2) | ||||
| <25 (n = 21946) | 1.00 | 1.00 | ||
| 25–30 (n = 9222) | 4.38 (3.45, 5.55) | <2e-16 | 4.31 (3.40, 5.47) | <2.0e-16 |
| >30 (n = 2572) | 15.4 (12.1, 19.6) | <2e-16 | 15.2 (11.9, 19.3) | <2.0e-16 |
| Physical activity | ||||
| Low (n = 4065) | 1.00 | 1.00 | ||
| Medium (n = 25326) | 0.47 (0.38, 0.59) | 1.5e-11 | 0.48 (0.39, 0.60) | 4.7e-11 |
| High (n = 4349) | 0.42 (0.30, 0.59) | 4.3e-7 | 0.43 (0.31, 0.60) | 9.2e-7 |
| Hypertension | ||||
| No (n = 30520) | 1.00 | 1.00 | ||
| Yes (n = 3220) | 3.89 (3.19, 4.74) | <2e-16 | 3.74 (3.06, 4.57) | <2.0e-16 |
| Smoking status | ||||
| Never (n = 12720) | 1.00 | 1.00 | ||
| Former (n = 10603) | 1.27 (1.02, 1.59) | 3.0e-2 | 1.30 (1.04, 1.62) | 2.0e-2 |
| Current (n = 10417) | 1.31 (1.05, 1.63) | 2.0e-2 | 1.35 (1.08, 1.68) | 8.0e-3 |
| Education (years) | ||||
| <10 (n = 6652) | 1.00 | 1.00 | ||
| 10–12 (n = 7948) | 0.85 (0.67, 1.09) | 2.0e-1 | 0.88 (0.69, 1.13) | 3.2e-1 |
| >12 (n = 17992) | 0.60 (0.48, 0.75) | 5.6e-6 | 0.63 (0.51, 0.79) | 6.5e-5 |
| Alcohol consumption (g/d) | ||||
| 0 (n = 6257) | 1.00 | 1.00 | ||
| <50 (n = 13507) | 0.68 (0.54, 0.85) | 6.0e-4 | 0.69 (0.55, 0.86) | 1.1e-3 |
| 51–100 (n = 9817) | 0.53 (0.41, 0.69) | 9.4e-7 | 0.54 (0.42, 0.70) | 2.2e-6 |
| >100 (n = 4159) | 0.46 (0.32, 0.65) | 1.2e-5 | 0.47 (0.33, 0.67) | 2.4e-5 |
| Cod liver oil supplements | ||||
| No (n = 18072) | 1.00 | 1.00 | ||
| Yes (n = 14763) | 0.77 (0.64, 0.93) | 6.8e-3 | 1.04 (1.02, 1.07) | 3.4e-3 |
| Carbohydrates (per 50 g/d) | 0.89 (0.82, 0.98) | 1.2e-2 | 0.90 (0.82, 0.98) | 1.8e-2 |
| Saturated fat(per 10 g/d) | 0.96 (0.86, 1.06) | 3.9e-1 | 0.97 (0.87, 1.07) | 5.3e-1 |
| Total energy intake (per 500 kcal) | 0.95 (0.85, 1.06) | 3.4e-1 | 0.96 (0.86, 1.07) | 4.5e-1 |
| Lean fish (per 25 g/d) | 1.02 (0.95, 1.11) | 5.7e-1 | 1.01 (0.93, 1.10) | 7.9e-1 |
| Fatty fish (per 25 g/d) | 1.13 (1.01, 1.28) | 4.0e-2 | 1.11 (0.99, 1.25) | 7.8e-2 |
| Fish products (per 25 g/d) | 1.04 (0.95, 1.13) | 4.1e-1 | 1.04 (0.96, 1.13) | 3.6e-1 |
| Total fish (per 25 g/d) | 1.04 (1.00, 1.09) | 2.8e-2 | 1.04 (1.00, 1.08) | 5.1e-2 |