Table 1.
Hazard Ratios for the Incidence of Fall-Related Injuries.
| Control (N=2040) |
Banding (N=376)b |
VBG (N=1365)b |
GBP (N=266)b |
|
|---|---|---|---|---|
| Number of first fall events | 513 | 84 | 324 | 100 |
| Person-years | 31148 | 4954 | 19742 | 3512 |
| Incidence rate per 1000 person-years (95% CI) | 16.5 (15.1-18.0) | 17.0 (13.7-21.0) | 16.4 (14.7-18.3) | 28.5 (23.4-34.6) |
| HR, unadjusted (95% CI) | 0.52 (0.42-0.65) | 0.54 (0.40-0.72) | 0.52 (0.42-0.66) | 1.0 (reference) |
| HR, adjusteda (95% CI) | 0.50 (0.40-0.62) | 0.52 (0.39-0.69) | 0.51 (0.41-0.64) | 1.0 (reference) |
| Total number of fall events | 886 | 128 | 600 | 235 |
| Person-years | 31949 | 5110 | 20328 | 3763 |
| Incidence rate per 1000 person-years (95% CI) | 27.7 (26.0-29.6) | 25.1 (21.1-29.8) | 29.5 (27.2-32.0) | 62.5 (55.0-71.0) |
| HR, unadjusted (95% CI) | 0.39 (0.30-0.51) | 0.35 (0.25-0.49) | 0.42 (0.32-0.55) | 1.0 (reference) |
| HR, adjusteda (95% CI) | 0.38 (0.29-0.49) | 0.34 (0.24-0.47) | 0.41 (0.31-0.54) | 1.0 (reference) |
a
Adjusted for fall-related injuries 12 months prior to inclusion, age, sex, diabetes, alcohol use and smoking and depression at baseline.
b
Censored at time of reoperation if it resulted in change of surgery group. CI, confidence interval; VBG, vertical banded gastroplasty; GBP, gastric bypass.