Table 4 Subgroup analysis of risk factors for nonunion of OVCFs
From: Risk factors for nonunion of osteoporotic vertebral compression fracture: a case‒control study
Subgroup | Case(%) | Control(%) | χ² | P |
|---|---|---|---|---|
N = 201 | N = 1044 | |||
Bed rest | ||||
No | 73(36.32) | 202(19.35) | 125.82 | 0.00 |
< 3weeks | 44(21.89) | 231(22.13) | 2.796 | 0.09 |
3-6weeks | 53(26.37) | 379(36.30) | 46.78 | 0.00 |
> 6weeks | 31(15.42) | 232(22.22) | 19.97 | 0.00 |
Spine support | ||||
No | 83(41.29) | 211(20.21) | 113.74 | 0.00 |
< 3weeks | 39(19.40) | 286(27.39) | 39.45 | 0.00 |
3-6weeks | 49(24.38) | 343(32.85) | 40.27 | 0.00 |
> 6weeks | 30(14.93) | 204(19.54) | 4.689 | 0.03 |