Table 2. Daily-Life Fall Results From Intention-to-Treat Analysis After 12 Months.
| PBT group (n = 70) | Control group (n = 70) | Absolute difference, rate (95% CI) | Relative difference (95% CI) | |
|---|---|---|---|---|
| Person-years of follow-up | 71.5 | 70.4 | NA | NA |
| Falls, No. (rate [95% CI])a | 62 (0.90 [0.58 to 1.21]) | 78 (1.14 [0.76 to 1.52]) | −0.25 (−0.74 to 0.25) | IRR: 0.78 (0.48 to 1.27) |
| Participants with at least 1 fall, No. (%) | 34 (49) | 39 (57) | −0.07 (−0.24 to 0.09) | RR: 0.87 (0.63 to 1.20) |
| Participants with ≥2 falls, No. (%) | 11 (16) | 15 (21) | −0.06 (−0.19 to 0.07) | RR: 0.73 (0.36 to 1.48) |
| Time to first fall, median (IQR), d | 94 (55 to 163) | 123 (49 to 235) | NA | HR: 1.41 (0.87 to 2.28) |
| Fall-related injuries, No. (rate [95% CI]) | 25 (0.35 [0.19 to 0.51]) | 34 (0.48 [0.28 to 0.68]) | −0.13 (−0.39 to 0.12) | IRR: 0.72 (0.39 to 1.34) |
| Participants with at least 1 fall-related injury, No. (%) | 17 (24) | 24 (34) | −0.10 (−0.25 to 0.05) | RR: 0.74 (0.43 to 1.25) |
| Fall-related health care contacts, No. (rate [95% CI]) | 2 (0.03 [−0.01 to 0.07]) | 8 (0.12 [0.03 to 0.20]) | −0.09 (−0.18 to 0.00) | IRR: 0.25 (0.05 to 1.21) |
| Participants with at least 1 fall-related hospital contact, No. (%) | 2 (3) | 7 (10) | −0.07 (−0.15 to 0.01) | RR: 0.29 (0.06 to 1.33) |
| Participants with at least 1 fall-related fracture, No. (%) | 1 (1) | 2 (3) | NAb | NAb |
| Daily-life slip falls, No. (rate [95% CI]) | 9 (0.13 [0.03 to 0.23]) | 13 (0.19 [0.06 to 0.32]) | −0.06 (−0.23 to 0.10) | IRR: 0.68 (0.25 to 1.89) |
| Daily-life trip falls, No. (rate [95% CI]) | 27 (0.39 [0.19 to 0.59]) | 33 (0.49 [0.25 to 0.72]) | −0.09 (−0.47 to 0.28) | IRR: 0.80 (0.40 to 1.63) |
Abbreviations: HR, hazard ratio; IRR, incidence rate ratio; NA, not applicable; PBT, perturbation-based balance training; RR, risk ratio.
a
Primary outcome. The rate is the falls per person-year of follow-up.
b
Not enough events to conduct analysis.