Table 1 Baseline characteristics
Characteristic | Original dataset | Complete case | Mode imputation | Single imputation | Multiple imputation [min - max]1 |
|---|---|---|---|---|---|
FEMALE | (n = 267,000) | n=(221,000) | (n = 267,000) | (n = 267,000) | (n = 267,000) |
Premature deaths (%) | 1.4 | 1.3 | 1.4 | 1.4 | 1.4 |
Follow-up time, mean (SD), years | 4.9 (4.5) | 4.9 (4.2) | 4.9 (4.5) | 4.9 (4.5) | 4.9 (4.5) |
Age Group (%) | |||||
Missing | 0.0 | - | - | - | - |
18–24 | 12.7 | 11.4 | 12.7 | 12.7 | [12.7–12.7] |
25–34 | 17.4 | 18.4 | 17.4 | 17.4 | [17.4–17.4] |
35–44 | 20.6 | 22.3 | 20.6 | 20.6 | [20.6–20.6] |
45–54 | 21.3 | 21.5 | 21.3 | 21.3 | [21.3–21.3] |
55–64 | 17.0 | 16.1 | 17.0 | 17.0 | [17.0–17.0] |
65–74 | 11.1 | 10.3 | 11.1 | 11.1 | [11.1–11.1] |
Household income quintile | |||||
Missing | 10.9 | - | - | - | - |
Q1 (lowest) | 13.8 | 15.1 | 21.1 | 15.5 | [15.5–15.6] |
Q2 | 14.5 | 16.2 | 14.5 | 16.4 | [16.3–16.5] |
Q3 | 18.5 | 20.8 | 18.5 | 20.8 | [20.8–20.8] |
Q4 | 22.0 | 24.9 | 25.6 | 24.7 | [24.6–24.8] |
Q5 (highest) | 20.3 | 23.0 | 20.3 | 22.5 | [22.5–22.6] |
Individual education | |||||
Missing | 4.5 | - | - | - | - |
Less than secondary school graduation | 7.1 | 7.2 | 7.1 | 7.6 | [7.6–7.6] |
Secondary school graduation | 10.5 | 10.8 | 10.5 | 11.1 | [11.1–11.2] |
Post-secondary education (complete and partial) | 77.9 | 82.0 | 82.4 | 81.4 | [81.3–81.4] |
Marital status | |||||
Missing | 0.1 | - | - | - | - |
Single never married | 22.1 | 20.6 | 22.1 | 22.1 | [22.1–22.1] |
Domestic partner (married/common law) | 63.6 | 64.8 | 63.7 | 63.7 | [63.6–63.7] |
Widowed/separated/divorced | 14.2 | 14.6 | 14.2 | 14.2 | [14.2–14.2] |
BMI categories | |||||
Missing | 3.4 | - | - | - | - |
< 18.5 | 3.9 | 3.8 | 3.9 | 4.0 | [4.0–4.0] |
18.5 to < 25.0 | 51.1 | 52.6 | 54.5 | 52.7 | [52.7–52.7] |
25.0 to < 30.0 | 25.8 | 26.9 | 25.8 | 26.8 | [26.8–26.8] |
30.0 to < 35.0 | 10.5 | 11.1 | 10.5 | 10.9 | [10.9–11.0] |
35.0 to < 40.0 | 3.5 | 3.7 | 3.5 | 3.6 | [3.6–3.6] |
≥ 40.0 | 1.8 | 1.9 | 1.8 | 1.9 | [1.9–1.9] |
Self-perceived general health | |||||
Missing | 0.1 | - | - | - | - |
Poor | 2.7 | 2.5 | 2.7 | 2.7 | [2.7–2.7] |
Fair | 8.6 | 8.2 | 8.6 | 8.6 | [8.6–8.6] |
Good | 28.3 | 27.5 | 28.3 | 28.3 | [28.3–28.3] |
Very good | 38.0 | 38.8 | 38.1 | 38.0 | [38.0–38.0] |
Excellent | 22.4 | 23.0 | 22.4 | 22.4 | [22.4–22.4] |
Physical activity2 | |||||
Missing | 1.6 | - | - | - | - |
Active | 22.4 | 22.7 | 22.4 | 22.8 | [22.7–22.8] |
Moderately active | 25.4 | 26.2 | 25.4 | 25.7 | [25.7–25.8] |
Inactive | 50.6 | 51.2 | 52.2 | 51.5 | [51.5–51.5] |
Smoking status | |||||
Missing | 3.1 | - | - | - | - |
Never smoker | 54.0 | 54.7 | 57.1 | 55.7 | [55.7–55.7] |
Former light smoker | 16.6 | 17.7 | 16.6 | 17.1 | [17.1–17.2] |
Former heavy smoker | 5.0 | 5.3 | 5.0 | 5.2 | [5.2–5.2] |
Current light smoker | 18.4 | 19.3 | 18.4 | 19.0 | [19.0–19.0] |
Current heavy smoker | 2.9 | 3.0 | 2.9 | 3.0 | [3.0–3.0] |
Self-reported chronic conditions | |||||
Emphysema/COPD | |||||
Missing | 0.1 | - | - | - | - |
Yes | 1.7 | 1.7 | 1.7 | 1.7 | [1.7–1.7] |
Heart disease | |||||
Missing | 0.1 | - | - | - | - |
Yes | 3.3 | 3.2 | 3.3 | 3.3 | [3.3–3.3] |
Diabetes | |||||
Missing | 0.1 | - | - | - | - |
Yes | 4.7 | 4.5 | 4.7 | 4.7 | [4.7–4.7] |
Cancer | |||||
Missing | 0.1 | - | - | - | - |
Yes | 1.8 | 1.8 | 1.8 | 1.8 | [1.8–1.8] |
Stroke | |||||
Missing | 0.0 | - | - | - | - |
Yes | 0.8 | 0.7 | 0.8 | 0.8 | [0.8–0.8] |
MALE | (n = 233,000) | n=(195,000) | (n = 233,000) | (n = 233,000) | (n = 233,000) |
Premature deaths (%) | 2.1 | 1.9 | 2.1 | 2.1 | [2.1–2.1] |
Follow-up time, mean (SD), years | |||||
Age Group | |||||
Missing | 0.0 | - | - | - | - |
18–24 | 13.6 | 11.9 | 13.6 | 13.6 | [13.6–13.6] |
25–34 | 18.5 | 19.0 | 18.5 | 18.5 | [18.5–18.5] |
35–44 | 20.9 | 22.5 | 20.9 | 20.9 | [20.9–20.9] |
45–54 | 20.5 | 21.0 | 20.5 | 20.5 | [20.5–20.5] |
55–64 | 16.8 | 16.4 | 16.8 | 16.8 | [16.8–16.8] |
65–74 | 9.9 | 9.3 | 9.9 | 9.9 | [9.9–9.9] |
Household income quintile | |||||
Missing | 8.2 | - | - | - | - |
Q1 (lowest) | 10.6 | 11.2 | 10.6 | 11.6 | [11.6–11.7] |
Q2 | 12.4 | 13.3 | 12.4 | 13.6 | [13.6–13.7] |
Q3 | 17.8 | 19.3 | 17.8 | 19.5 | [19.4–19.5] |
Q4 | 24.5 | 26.9 | 27.2 | 26.7 | [26.7–26.8] |
Q5 (highest) | 26.4 | 29.2 | 31.9 | 28.6 | [28.5–28.6] |
Individual education | |||||
Missing | 6.0 | - | - | - | - |
Less than secondary school graduation | 6.2 | 6.4 | 6.2 | 6.8 | [6.8–6.8] |
Secondary school graduation | 10.3 | 10.8 | 10.3 | 11.1 | [11.1–11.2] |
Post-secondary education (complete and partial) | 77.4 | 82.8 | 83.5 | 82.1 | [82.1–82.1] |
Marital status | |||||
Missing | 0.1 | - | - | - | - |
Single never married | 26.8 | 24.3 | 26.8 | 26.8 | [26.8–26.8] |
Domestic partner (married/common law) | 65.7 | 68.0 | 65.8 | 65.8 | [65.7–65.8] |
Widowed/separated/divorced | 7.4 | 7.7 | 7.4 | 7.4 | [7.4–7.5] |
BMI categories | |||||
Missing | 1.5 | - | - | - | - |
< 18.5 | 1.1 | 1.0 | 1.1 | 1.1 | [1.1–1.1] |
18.5 to < 25.0 | 39.6 | 39.5 | 41.0 | 40.1 | [40.1–40.2] |
25.0 to < 30.0 | 40.1 | 41.2 | 40.1 | 40.7 | [40.6–40.7] |
30.0 to < 35.0 | 13.6 | 14.0 | 13.6 | 13.8 | [13.8–13.9] |
35.0 to < 40.0 | 3.1 | 3.2 | 3.1 | 3.1 | [3.1–3.1] |
≥ 40.0 | 1.1 | 1.1 | 1.1 | 1.1 | [1.1–1.1] |
Self-perceived general health | |||||
Missing | 0.1 | - | - | - | - |
Poor | 2.4 | 2.2 | 2.4 | 2.4 | [2.4–2.4] |
Fair | 7.8 | 7.4 | 7.8 | 7.8 | [7.8–7.8] |
Good | 28.4 | 28.2 | 28.4 | 28.5 | [28.5–28.5] |
Very good | 37.9 | 38.8 | 37.9 | 37.9 | [37.9–37.9] |
Excellent | 23.4 | 23.4 | 23.4 | 23.4 | [23.4–23.4] |
Smoking status | |||||
Missing | 3.5 | - | - | - | - |
Never smoker | 44.4 | 45.6 | 47.9 | 46.0 | [46.0–46.1] |
Former light smoker | 16.7 | 17.8 | 16.7 | 17.3 | [17.3–17.3] |
Former heavy smoker | 9.4 | 9.9 | 9.4 | 9.8 | [9.8–9.9] |
Current light smoker | 20.3 | 20.8 | 20.3 | 21.0 | [20.9–21.0] |
Current heavy smoker | 5.7 | 5.8 | 5.7 | 5.9 | [5.9–5.9] |
Self-reported chronic conditions | |||||
Emphysema/COPD | |||||
Missing | 0.1 | - | - | - | - |
Yes | 1.5 | 1.5 | 1.5 | 1.5 | [1.5–1.5] |
Heart disease | |||||
Missing | 0.1 | - | - | - | - |
Yes | 4.8 | 4.8 | 4.8 | 4.8 | [4.8–4.8] |
Diabetes | |||||
Missing | 0.1 | - | - | - | - |
Yes | 5.8 | 5.7 | 5.8 | 5.8 | [5.8–5.8] |
Cancer | |||||
Missing | 0.1 | - | - | - | - |
Yes | 1.5 | 1.5 | 1.5 | 1.5 | [1.5–1.5] |
Stroke | |||||
Missing | 0.0 | - | - | - | - |
Yes | 0.9 | 0.8 | 0.9 | 0.9 | [0.9–0.9] |
Arthitis | |||||
Missing | 0.1 | - | - | - | - |
Yes | 11.7 | 11.5 | 11.7 | 11.7 | [11.7–11.7] |
Alzheimer’s | |||||
Missing | 0.1 | - | - | - | - |
Yes | 0.2 | 0.1 | 0.2 | 0.2 | [0.2–0.2] |