Foot Complications in a Representative Australian Inpatient Population

Table 3

Independent factors associated with previous amputations (odds ratios [95% CI]).

Risk factor	Unadjusted	value	Adjusted^a	value
CVA history	4.83 (1.48–15.74)	0.009	6.85 [1.86–25.21]	0.004
Previous foot ulcer	17.92 (6.51–49.29)	<0.001	22.01 [6.89–70.38]	<0.001
Foot deformity	4.50 (1.70–11.90)	0.002	5.59 [1.89–16.55]	0.002
Surgeon past foot treatment	8.09 (2.50–26.20)	<0.001	10.73 [2.87–40.15]	<0.001
Model 1 results	Pseudo R^2: 0.447; Omnibus: ,	Missing: 29 (4.0%); H&L:	Pseudo R^2: 0.516; Omnibus: ,	Missing: 50 (6.8%); H&L:

. ^aAdjusted for identified confounder of geographical remoteness; pseudo R²: Nagelkerke R²; omnibus: omnibus tests of model coefficients; df: degrees of freedom; missing: excluded cases with any missing data; H&L: Hosmer and Lemeshow test; CVA: cardiovascular accident.