Median change in weight and body mass index, and annual rate of change, between admission and follow-up by institutional characteristic
| Characteristic | Median weight change in kg (95% CI) | p value* | Median BMI change (95% CI) | p value* | Median annual weight change in 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) | |||
| Feeding system | ||||||
| Tray (menu) | +6.00 (4.83–7.17) | 0.97 | +1.90 (1.52–2.28) | 0.97 | +1.48 (0.98–1.97) | 0.97 |
| Cafeteria (menu) | +6.85 (5.75–7.95) | +2.20 (1.86–2.54) | +1.63 (1.18–2.08) | |||
| Kitchenette (no menu) | +6.50 (5.41–7.59) | +2.10 (1.74–2.46) | +1.50 (0.93–2.07) | |||
| Security level | ||||||
| Maximum | +5.55 (4.32–6.78) | 0.05 | +1.80 (1.42–2.18) | 0.04 | +1.45 (0.94–1.95) | 0.1 |
| Medium | +7.00 (6.10–7.90) | +2.30 (2.01–2.59) | +1.79 (1.39–2.19) | |||
| Minimum | +5.55 (4.07–6.93) | +1.80 (1.34–2.26) | +1.02 (0.24–1.81) | |||
| Length of incarceration at follow-up | ||||||
| ≤ 18 mo | +5.60 (4.70–6.50) | 0.001 | +1.90 (1.60–2.20) | 0.001 | +6.40 (5.33–7.47) | < 0.001 |
| > 18 mo to ≤ 5 yr | +5.75 (4.65–6.85) | +1.80 (1.45–2.15) | +2.09 (1.67–2.51) | |||
| > 5 yr | +8.40 (6.92–9.88) | +2.70 (2.23–3.17) | +0.64 (0.54–0.74) | |||
| Length of total sentence, yr | ||||||
| 2 to ≤ 3 | +6.00 (4.63–7.37) | 0.006 | +2.00 (1.55–2.45) | 0.007 | +6.21 (4.76–7.66) | < 0.001 |
| > 3 to ≤ 5 | +6.25 (4.99–7.51) | +2.00 (1.60–2.40) | +3.74 (2.78–4.70) | |||
| > 5 to ≤ 25 | +5.50 (4.35–6.65) | +1.70 (1.33–2.07) | +1.95 (1.44–2.46) | |||
| > 25 | +7.70 (6.36–9.04) | +2.50 (2.06–2.94) | +0.69 (0.56–0.81) | |||
Note: BMI = body mass index, CI = confidence interval.
↵* Kruskal–Wallis test; p < 0.05 was considered significant. The mean (± standard deviation) length of time between admission and follow-up was 5.0 (± 8.3) years.