Table 2 Logistic regression model to detect possible risk factors for losing cortex-to-cortex support
Factors | All | Group 1 (n = 84) | Group 2 (n = 38) | Univariate analysis | Multivariate analysis | ||
|---|---|---|---|---|---|---|---|
Contact | No contact | OR (95% CI) | P value | Adjusted OR (95% CI) | P value | ||
Side | 0.909 (0.422–1.957) | 0.807 | |||||
Left | 59 (48) | 40 (48) | 19 (50) | ||||
Right | 63 (52) | 44 (52) | 19 (50) | ||||
Gender | 1.681 (0.679–4.163) | 0.262 | |||||
Male | 34 (28) | 26 (31) | 8 (21) | ||||
Female | 88 (72) | 58 (69) | 30 (79) | ||||
Ages (mean ± SD) | 83.0 ± 8.2 | 82.3 ± 8.7 | 84.6 ± 7.0 | 1.037(0.986–1.091) | 0.155 | ||
ASA Score 1/2/3/4 | 3/50/69/0 | 1/35/48/0 | 2/15/21/0 | 0.820 (0.409–1.646) | 0.577 | ||
Singh Osteoporosis index I/II/III/IV/V/VI | 4/5/29/50/24/10 | 2/4/18/35/15/10 | 2/1/11/15/9/0 | 0.782 (0.550–1.111) | 0.170 | ||
AO classification | 2.417 (1.019–5.732) | 0.045 | 0.961 (0.217–4.255) | 0.958 | |||
31.A1 | 45 (37) | 36 (43) | 9 (24) | ||||
31.A2 | 77 (63) | 48 (57) | 29 (76) | ||||
Reduction quality | 0.043 (0.016–0.118) | < 0.001 | 0.072(0.017–0.307) | < 0.001 | |||
Good | 87 (71) | 76 (91) | 11 (29) | ||||
Acceptable | 35 (29) | 8 (9) | 27 (71) | ||||
NSA (mean ± SD) | 130.7 ± 5.3 | 130.6 ± 5.4 | 130.7 ± 5.1 | 1.003 (0.933–1.079) | 0.930 | ||
TAD (mean ± SD) | 22.5 ± 4.5 | 22.8 ± 4.6 | 21.9 ± 4.2 | 0.958 (0.879–1.044) | 0.331 | ||
Cal-TAD (mean ± SD) | 23.3 ± 4.6 | 23.4 ± 4.7 | 23.2 ± 4.5 | 0.993 (0.914–1.079) | 0.865 | ||
FR in AP view (mean ± SD) | 66.9 ± 10.9 | 70.8 ± 9.6 | 58.4 ± 8.6 | 0.868 (0.821–0.917) | < 0.001 | 0.936 (0.862–1.017) | 0.121 |
FR in Lat view (mean ± SD) | 58.3 ± 10.7 | 63.1 ± 8.3 | 47.8 ± 7.1 | 0.761 (0.688–0.843) | < 0.001 | 0.793 (0.701–0.896) | < 0.001 |
Parker ratio in AP view (mean ± SD) | 42.1 ± 8.1 | 41.5 ± 7.8 | 43.5 ± 8.7 | 1.030 (0.982–1.081) | 0.222 | ||
Parker ratio in Lat view (mean ± SD) | 46.4 ± 8.9 | 47.8 ± 8.7 | 43.4 ± 8.6 | 0.942 (0.900–0.987) | 0.012 | 0.959 (0.887–1.037) | 0.293 |