Median change in weight and body mass index, and annual rate of change, between admission and follow-up by sociodemographic characteristic
| Characteristic | Median weight change, kg (95% CI) | p value* | Median BMI change (95% CI) | p value* | Median annual rate of change, kg/yr (95% CI) | p value* |
|---|---|---|---|---|---|---|
| Overall | +6.20 (5.55–6.85) | +2.00 (1.79–2.21) | +1.52 (1.24–1.81) | |||
| Sex | ||||||
| Male | +6.50 (5.82–7.18) | 0.3 | +2.00 (1.78–2.22) | 0.7 | +1.46 (1.18–1.75) | 0.2 |
| Female | +5.80 (3.60–8.00) | +2.00 (1.19–2.81) | +2.69 (0.99–4.39) | |||
| Age, yr | ||||||
| 18 to ≤ 24 | +4.70 (2.99–6.41) | 0.05 | +1.60 (1.04–2.16) | 0.04 | +3.51 (2.08–4.93) | < 0.0001 |
| ≥ 25 to ≤ 34 | +5.70 (4.62–6.78) | +1.80 (1.45–2.15) | +2.30 (1.63–2.98) | |||
| ≥ 35 to ≤ 44 | +6.30 (4.99–7.70) | +2.00 (1.55–2.45) | +2.13 (1.35–2.92) | |||
| ≥ 45 to ≤ 64 | +7.60 (6.35–8.85) | +2.50 (2.09–2.91) | +1.03 (0.68–1.39) | |||
| ≥ 65 | +5.30 (3.87–9.46) | +1.75 (1.28–3.10) | +0.51 (0.16–0.85) | |||
| Region | ||||||
| Atlantic | +5.05 (4.00–6.10) | 0.0004 | +1.70 (1.35–2.05) | 0.002 | +1.42 (0.91–1.92) | 0.1 |
| Ontario | +7.10 (6.28–7.92) | +2.30 (2.04–2.56) | +1.57 (1.22–1.92) | |||
| First language | ||||||
| English | +6.30 (5.61–6.99) | 0.3 | +2.00 (1.78–2.22) | 0.4 | +1.50 (1.20–1.80) | 0.9 |
| French | +6.00 (4.08–7.92) | +1.90 (1.28–2.52) | +1.75 (0.78–2.72) | |||
| Ethnicity | ||||||
| White | +6.30 (5.47–7.13) | 0.004 | +2.00 (1.73–2.27) | 0.005 | +1.42 (1.07–1.78) | 0.06 |
| Black | +7.00 (5.54–8.46) | +2.20 (1.75–2.65) | +2.06 (1.22–2.90) | |||
| Aboriginal | +7.70 (6.92–10.52) | +2.40 (1.83–2.97) | +1.72 (0.89–2.54) | |||
| Other | +3.30 (1.61–4.99) | +1.00 (0.77–1.86) | +1.14 (0.49–1.78) | |||
Note: BMI = body mass index, CI = confidence interval.
↵* Wilcoxon test was used in analyses with two categories (sex, region, language), a Kruskal–Wallis test was used in analyses with three or more categories (age and ethnicity); p < 0.05 was considered significant.