Table 3

Independent associated factors for primary admissions for foot-related conditions using multivariate logistical regression (ORs (95% CI))

Risk factor	Unadjusted	p Value	Adjusted	p Value
Model 1
Myocardial infarct	0.15 (0.03 to 0.70)	0.016*	0.34 (0.06 to 1.90)	0.219
Acute foot trauma	29.49 (7.28 to 119.48)	<0.001*	73.32 (15.86 to 338.92)	<0.001*
PAD		<0.001*		<0.001*
Nil PAD	Referent		Referent
Mild PAD	0	NA	0	NA
Moderate PAD	2.37 (0.62 to 9.04)	0.207	5.45 (1.05 to 28.23)	0.044
Critical PAD	53.60 (16.82 to 170.84)	<0.001*	140.56 (30.82 to 641.04)	<0.001*
Current foot infection	29.39 (7.52 to 114.83)	<0.001*	53.11 (9.89 to 285.17)	<0.001*
Past GP treatment	4.65 (1.64 to 13.20)	0.004*	7.61 (2.30 to 25.19)	0.001*
Past surgeon treatment	5.88 (1.66 to 20.81)	0.006*	6.98 (1.91 to 25.54)	0.003*
Model 1 results:	Pseudo R²: 0.602; Omnibus: df=8, p=<0.001	Missing: 14 (1.9%); H&L: p=0.013	Pseudo R²: 0.657; Omnibus: df=15, p=<0.001	Missing: 36 (4.9%); H&L: p=0.880
Model 2	+ Past foot treatment
Foot risk status		<0.001*		<0.001*
Low risk	Referent		Referent
At risk	1.66 (0.15 to 18.76)	0.682	2.01 (0.18 to 23.16)	0.574
High risk	23.12 (5.05 to 105.95)	<0.001*	39.57 (8.15 to 192.05)	<0.001*
Acute	181.44 (40.52 to 812.51)	<0.001*	158.63 (30.34 to 829.51)	<0.001*
Past GP treatment	2.70 (1.17 to 6.25)	0.020*	6.40 (2.36 to 17.40)	<0.001*
Past surgeon treatment	4.31 (1.49 to 12.44)	0.007*	11.62 (3.46 to 39.03)	<0.001*
Model 2 results:	Pseudo R²: 0.582; Omnibus: df=5, p=<0.001	Missing: 2 (0.3%); H&L: p=0.861	Pseudo R²: 0.638; Omnibus: df=10, p=<0.001	Missing: 2 (0.3%); H&L: p=0.954

*p<0.05.df, degrees of freedom; H&L, Hosmer and Lemeshow test; missing, excluded missing cases; NA, not applicable; Omnibus, Omnibus tests of model coefficients; Pseudo R², Nagelkerke R²; GP, general practitioner; PAD, peripheral arterial disease.