Table 3

Predictors of length ofhospital stay (LOS) amongpatients with chronic lowerlimb ulcers according tounivariate and multivariate logisticregression analysis
Predictor (Independent) variables LOS n (%) Univariate analysis Multivariate analysis
≤14 >14 OR 95% CI P- value OR CI P-value
Age
 <20 14(17.5) 66(82.5) 1
 >20 45(20.4) 175(79.6) 1.1 0.4-1.6 0.570
Sex
 Male 42(21.0) 158(79.0) 1
 Female 17(17.0) 83(83.0) 1.3 0.7-2.4 0.412
HIV status
 Positive 2(10.0) 18(90.0) 1
 Negative 57(20.4) 223(79.6) 2.3 0.5-10.2 0.273
Pre-morbid illness
 Absent 51(20.7) 195(79.3) 1
 Present 8(14.8) 46(85.2) 1.5 0.7-3.4 0.324
Duration of illness
 1/12-3/12 47(19.9) 189(80.1) 1
 3/12-1 year 7(16.7) 35(83.3) 1.2 0.5-3.0 0.624
 >1 year 5(22.7) 17(77.3) 0.8 0.3-2.4 0.753
Type of ulcer
 Traumatic ulcer 42(23.2) 139(76.8) 1
 Vascular ulcer 2(18.2) 9(81.8) 1.4 0.3-6.5 0.701
 Neoplastic ulcer 4(20.0) 16(80.0) 1.2 0.4-3.8 0.746
 Infective ulcer 6(14.0) 37(86.1) 1.9 0.7-4.7 0.189
 Metabolic ulcer 3(8.6) 32(91.4) 3.2 0.9-11.1 0.063 3.5 1.0-12.5 0.056
 Neuropathic ulcer 1(12.5) 7(87.5) 2.1 0.3-17.7 0.489
 Ulcerating skin disease 1(50.0) 1(50.0) 0.3 0.01-4.9 0.401
Ulcer size in cm
 ≤5 38(20.2) 150(79.8) 1
 >5-10 17(19.3) 71(80.7) 1.1 0.6-2.0 0.862
 >10 4(16.7) 20(83.3) 1.3 0.4-3.9 0.682
Mode of treatment
 Conservative 13(34.2) 25(65.8) 1
 Surgical 46(17.6) 216(82.4) 2.4 1.2-5.1 0.018 3.2 1.4-7.1 0.005
Postoperative complications
 Absent 26(21.3) 96(78.7) 1
 Present 33(18.5) 145(81.5) 1.2 0.7-2.1 0.553

Mbunda et al.

Mbunda et al. BMC Dermatology 2012 12:17   doi:10.1186/1471-5945-12-17

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