Table 2:
Population characteristics of all predictors that were prespecified and included in the model
| Characteristic | Median (IQR) or no. (%) | |||
|---|---|---|---|---|
|
| ||||
| Female cohort | Male cohort | |||
|
|
|
|||
| Derivation n = 42 185 (377 635 person-years) |
Validation n = 14 801 (72 317 person-years) |
Derivation n = 35 066 (309 500 person-years) |
Validation n = 12 167 (59 026 person-years) |
|
| Age, yr | 48.0 (35.0–63.0) | 51.0 (37.0–64.0) | 46.0 (35.0–59.0) | 49.0 (36.0–62.0) |
|
| ||||
| Smoking | ||||
|
| ||||
| Current | 9533 (22.6) | 2884 (19.5) | 9409 (26.8) | 2935 (24.1) |
|
| ||||
| Pack-years | 15.5 (7.0–28.5) | 16.2 (3.5–28.9) | 18.8 (8.5–34.0) | 18.8 (8.2–36.0) |
|
| ||||
| Former smoker < 5 yr ago | 2947 (7.0) | 916 (6.2) | 2933 (8.4) | 921 (7.6) |
|
| ||||
| Pack-years | 11.9 (3.9–27.8) | 10.9 (3.5–29.9) | 17.9 (6.0–36.0) | 15.0 (4.6–35.0) |
|
| ||||
| Former smoker ≥ 5 yr ago | 7928 (18.8) | 3059 (20.7) | 8750 (25.0) | 3270 (26.9) |
|
| ||||
| Pack-years | 6.5 (1.0–18.5) | 7.2 (1.7–19.5) | 12.0 (2.5–27.0) | 13.0 (3.8–28) |
|
| ||||
| Nonsmoker | 15 843 (37.6) | 6019 (40.7) | 8724 (24.9) | 3235 (26.6) |
|
| ||||
| Missing | 5934 (14.1) | 1923 (13.0) | 5250 (15.0) | 1806 (14.8) |
|
| ||||
| Alcohol | ||||
|
| ||||
| Current drinker | 33 063 (78.4) | 11 693 (79.0) | 30 178 (86.1) | 10 466 (86.0) |
|
| ||||
| No. of drinks in the previous week | 1 (0–4) | 1 (0–4) | 3 (0–9) | 4 (0–10) |
|
| ||||
| Former drinker | 6217 (14.7) | –* | 3642 (10.4) | –* |
|
| ||||
| Nondrinker | 2839 (6.7) | 3090 (20.9) | 1188 (3.4) | 1679 (13.8) |
|
| ||||
| Missing | 66 (0.2) | 18 (0.1) | 58 (0.2) | 22 (0.2) |
|
| ||||
| Diet | ||||
|
| ||||
| Fruit and vegetables, servings/d | 3.4 (2.3–5.0) | 3.7 (2.4–5.3) | 2.6 (1.7–3.8) | 2.7 (1.7–4.1) |
|
| ||||
| Potato consumption, servings/d | 0.3 (0.1–0.6) | 0.3 (0.1–0.4) | 0.3 (0.1–0.6) | 0.3 (0.1–0.6) |
|
| ||||
| Juice consumption, servings/d | 1.0 (0.1–1.0) | 0.4 (0.1–1.0) | 1.0 (0.3–1.0) | 1.0 (0.1–1.0) |
|
| ||||
| Physical activity | ||||
|
| ||||
| Energy expenditure, kcal/kg/d | 1.3 (0.5–2.7) | 1.4 (0.5–2.7) | 1.6 (0.6–3.1) | 1.6 (0.6–3.1) |
|
| ||||
| Body mass index | 24.7 (21.8–28.1) | 24.9 (22.1–28.9) | 26.2 (23.9–28.9) | 26.4 (24.1–29.3) |
|
| ||||
| Self-perceived stress | ||||
|
| ||||
| Not at all/not very | 14 769 (35.0) | 5340 (36.1) | 13 082 (37.3) | 4787 (39.3) |
|
| ||||
| A bit | 17 286 (41) | 6292 (42.5) | 14 276 (40.7) | 4983 (41.0) |
|
| ||||
| Quite a bit/extremely | 10 072 (23.9) | 3098 (20.9) | 7645 (21.8) | 2352 (19.3) |
|
| ||||
| Missing | 58 (0.1) | 71 (0.5) | 63 (0.2) | 45 (0.4) |
|
| ||||
| Sense of belonging | ||||
|
| ||||
| Very strong/somewhat strong | 27 552 (65.3) | 10 118 (68.4) | 21 768 (62.1) | 7977 (65.6) |
|
| ||||
| Somewhat weak/very weak | 13 850 (32.8) | 4373 (29.5) | 11 981 (34.2) | 3848 (31.6) |
|
| ||||
| Missing | 783 (1.9) | 310 (2.1) | 1317 (3.8) | 342 (2.8) |
|
| ||||
| Ethnicity | ||||
|
| ||||
| White | 38 089 (90.3) | 12 894 (87.1) | 31 369 (89.5) | 10 577 (86.9) |
|
| ||||
| Black | 519 (1.2) | 280 (1.9) | 432 (1.2) | 206 (1.7) |
|
| ||||
| Chinese | 590 (1.4) | 229 (1.5) | 570 (1.6) | 217 (1.8) |
|
| ||||
| Aboriginal | 685 (1.6) | 432 (2.9) | 516 (1.5) | 348 (2.9) |
|
| ||||
| South Asian, Arab, West Asian | 867 (2.1) | 440 (3.0) | 901 (2.6) | 411 (3.4) |
|
| ||||
| Japanese, Korean, Southeast Asian, Filipino | 503 (1.2) | 206 (1.4) | 423 (1.2) | 166 (1.4) |
|
| ||||
| Other, multiple origin, unknown, Latin American | 854 (2.0) | 218 (1.5) | 788 (2.2) | 166 (1.4) |
|
| ||||
| Missing | 78 (0.2) | 102 (0.7) | 67 (0.2) | 76 (0.6) |
|
| ||||
| Immigration status | ||||
|
| ||||
| Immigrant | 8544 (20.3) | 3163 (21.4) | 7153 (20.4) | 2594 (21.3) |
|
| ||||
| Fraction of life lived in Canada | 0.60 (0.36–0.73) | 0.60 (0.36–0.73) | 0.59 (0.35–0.74) | 0.60 (0.38–0.75) |
|
| ||||
| Nonimmigrant | 33 591 (79.6) | 11 618 (78.5) | 27 868 (79.5) | 9565 (78.6) |
|
| ||||
| Missing | 50 (0.1) | 20 (0.1) | 45(0.1) | 8 (0.1) |
|
| ||||
| Education | ||||
|
| ||||
| Less than secondary school graduation | 8330 (19.7) | 2388 (16.1) | 6486 (18.5) | 1966 (16.1) |
|
| ||||
| Secondary school graduation | 8754 (20.8) | 2749 (18.6) | 6567 (18.7) | 2048 (16.8) |
|
| ||||
| Some postsecondary education | 3099 (7.3) | 935 (6.3) | 2587 (7.4) | 897 (7.4) |
|
| ||||
| Postsecondary graduation | 21 711 (51.5) | 8658 (58.5) | 19 079 (54.4) | 7204 (59.2) |
|
| ||||
| Missing | 291 (0.7) | 71 (0.5) | 347 (1.0) | 52 (0.4) |
|
| ||||
| Neighbourhood deprivation | ||||
|
| ||||
| Low | 8189 (19.4) | 2658 (18.0) | 7255 (20.7) | 2285 (18.8) |
|
| ||||
| Moderate | 26 229 (62.2) | 9231 (62.3) | 21 760 (62.1) | 7664 (63.0) |
|
| ||||
| High | 6890 (16.3) | 2471 (16.7) | 5313 (15.2) | 1900 (15.6) |
|
| ||||
| Missing | 877 (2.1) | 441 (3.0) | 738 (2.1) | 318 (2.6) |
|
| ||||
| Diabetes status | ||||
|
| ||||
| Yes diabetes | 2159 (5.1) | 949 (6.4) | 2041 (5.8) | 952 (7.8) |
|
| ||||
| No diabetes | 40 004 (94.8) | 13 846 (93.5) | 33 004 (94.1) | 11 201 (92.1) |
|
| ||||
| Missing | 22 (0.1) | 6 (0.04) | 21 (0.1) | 14 (0.1) |
|
| ||||
| Hypertension status | ||||
|
| ||||
| Yes hypertension | 8089 (19.2) | 3344 (22.5) | 5659 (16.1) | 2471 (20.3) |
|
| ||||
| No hypertension | 34 060 (80.7) | 11 435 (77.3) | 29 333 (83.7) | 9643 (79.3) |
|
| ||||
| Missing | 36 (0.1) | 22 (0.1) | 74 (0.2) | 53 (0.4) |
|
| ||||
| Survey cycle | ||||
|
| ||||
| 1 | 13 932 (33.0) | – | 11 644 (33.2) | – |
|
| ||||
| 2 | 14 093 (33.4) | – | 11 685 (33.3) | – |
|
| ||||
| 3 | 14 160 (33.6) | – | 11 737 (33.5) | – |
Note: IQR = interquartile range.
*
Former drinkers and nondrinkers were combined in 1 category in Canadian Community Health Survey 2007/08.