Metformin Prevents Nonunion after Three-Cannulated-Screw Fixation in Displaced Femoral Neck Fractures: A Retrospective Study

Table 2

Results of multivariate binary logistic regression analysis.

	value	OR	95% CI
Garden Stage IV (reference: Garden Stage III)	0.284	1.280	0.814–2.013
Pauwel’s Stage II (reference: Pauwel’s Stage I)	0.223	0.630	0.300–1.323
Pauwel’s Stage III (reference: Pauwel’s Stage I)	0.443	1.219	0.735–2.022
Reduction quality (reference: anatomical)	0.001	2.659	1.530–4.620
T2DM (+)	0.241	3.030	0.474–19.356
HbA1C 6%–10% (reference: HbA1C < 6%)	0.385	2.341	0.343–15.984
HbA1C > 10% (reference: HbA1C < 6%)	0.014	4.797	1.371–16.778
Metformin (+)	0.005	0.193	0.060–0.616
Insulin (+)	0.101	0.386	0.124–1.204
Alpha-glucosidase inhibitor (+)	0.363	0.459	0.086–2.456
Secretagogue (+)	0.875	1.094	0.356–3.362

OR = odds ratio; CI = confidence interval. .