Charcot arthropathy of the diabetic foot in a sub-Saharan tertiary hospital: a cross-sectional study

Table 3 Bivariate analysis of clinical and paraclinical characteristics associated with CA among adult patients with longstanding diabetes

Clinical / Paraclinical Characteristics	Presence of Charcot N = 12 (%)	No Charcot N = 88(%)	Prob > \|z\|
History of foot surgery
Yes	1 (8)^a	2 (2)^b	0.2507
No	11 (92)	86 (98)
History of foot trauma
Yes	1 (8)	5 (6)	0.7181
No	11 (92)	83 (94)
Foot radiograph
Normal	2 (17)	61 (69)
Abnormal	10 (83)	27 (31) ^c	0.0004
HbA1c
Means ±SD	6.08 ± 2.17	6.74 ± 2.42
95%Confidence interval	(4.77, 7.40)	(6.23, 7.25)
Pr(T > t)	0.2121	0.4115

The Mann-Whitney U-test for categorical variables with unequal variances was used; the Student’s t-test for continuous variables (HbA1c)
^aThe patient had a below knee amputation after foot gangrene ^b Patients had below knee amputation after foot gangrene and first toe amputation after big toe gangrene ^c Abnormal, no CA: Arthritic changes (19/27, 71%), osteoporosis (6/27, 22%), toe deformities (2/27, 7%, hallux valgus and congenital malformation)

ISSN: 1757-1146