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Table 3 Predictors of prolonged LOS according to univariate and multivariate logistic regression analysis

From: Pattern of childhood burn injuries and their management outcome at Bugando Medical Centre in Northwestern Tanzania

Predictor variable N (%) Univariate analysis Multivariate analysis
   OR 95% C.I. P -value OR 95% C.I. P -value
Age(in years)
< 5 250 (73.1)       
5-10 92 (26.9) 3.85 (3.17-4.65) 0.011 2.87 (1.23-5.86) 0.004
Sex        
Males 198 (57.9)       
Females 144 (42.1) 1.82 (0.99-3.34) 0.056 2.12 (1.90-3.21) 0.177
Pre-existing illness
Present 8 (2.3)       
Absent 334 (97.7) 2.29 (0.67-5.78) 0.088 0.26 (0.16-1.95) 0.456
Timing of care
¿ 24 h 246 (71.9)       
> 24 h 96 (28.1) 14.43 (7.33-29.67) 0.002 3.54 (1.32-6.71) 0.006
Type of burn
Scald 192 (56.1)       
Flame 138 (40.4) 1.21 (1.114-2.65) 0.032 1.61 (1.53-2.32) < 0.001
Chemical 5 (1.5) 1.83 (0.81-4.11) 0.1 0.42 (0.21-0.95) < 0.001
Electrical 3 (0.9 2.52 (1.32-3.81) 0.043 0.90 (0.93-0.98) < 0.001
Contact 4 (1.2) 1.87 (1.01-2.69) 0.071 2.11 (1.03-2.42) < 0.001
Clothing ignition
Yes 38 (11.1       
No 304 (88.9) 2.21 (1.42-5.62) 0.023 1.73 (1.11-4.86) 0.014
Associated injuries
Present 6 (1.8)       
Absent 336 (98.2) 9.34 (5.3-17.93) 0.003 1.71 (1.21-3.33) 0.035
TBSA (%)
< 40 322 (94.2)       
¿ 40 20 (5.8) 2.38 (1.67-5.61) 0.002 2.97 (2.08-3.98) 0.010
Inhalation injury
Present 5(1.5)       
Absent 337 (98.5) 1.06 (0.65-1.98) 0.038 0.27 (0.01-1.31) 0.058
Burn depth
Superficial 164 (48.0)       
Deep 98(28.7) 0.32 (0.18-2.12) 0.953 0.21 (0.11-.3.91) 0.897
Mixed 80(23.4 1.94 (0.53-2.63) 0.212 1.85 (1.13-2.11) 0.065
Severity
Moderate 194 (56.7)       
Severe 148(43.3) 0.26 (0.11-0.93) 0.001 4.32 (2.65-8.39) 0.011
HIV status
Positive 8 (2.3)       
Negative 334 (97.7) 0.56 (0.21-1.93) 0.111 2.09 (1.23-2.98) 0.981
CD 4 + count
< 200 3 (37.5)       
¿200 5(62.5) 0.93 (0.52-1.99) 0.123 1.33 (0.54-2.23) 0.072
  1. Keys: TBSA = total body surface area, O.R. = Odds ratio, C.I. = Confidence Interval