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Table 3 Univariate and Multivariate analysis of risk factors associated with unplanned reoperation in neonates after gastrointestinal procedures

From: Analysis of risk factors for unplanned reoperation following primary repair of gastrointestinal disorders in neonates

Independent Variable Univariate analysis Multivariate analysis
OR (95% CI) P value Adjusted OR (95% CI) P value
Weight at surgery (kg) 0.94 (0.55, 1.6) 0.83   
Birth weight < 1.5 (kg) 1.98 (0.63,6.24) 0.24   
Gestational weeks (< 37 vs. ≥ 37) 1.48 (0.69, 3.2) 0.32   
Type of surgeries (Elective vs. Emergency) 2.72 (0.92, 8.07) 0.07 0.33 (0.10, 1.09) 0.07
Surgical services, n (%)
 Anoplasty 0.13 (0.02, 0.94) 0.04* 0.04 (0.00, 1.15) 0.06
 Enterectomy 5.11 (1.51, 17.31) < 0.01* 0.20 (0.01, 2.92) 0.24
 others 0.22 (0.03, 1.68) 0.15 0.05 (0.00, 1.47) 0.08
Mean intraoperative temperature, n (%)
  ≥ 36 and < 37.5 (°C) 0.51 (0.22, 1.16) 0.11 0.74 (0.17, 3.22) 0.69
  ≥ 35 and < 36.0 (°C) 1.11 (0.48, 2.55) 0.81   
  < 35.0 (°C) 1.9 (0.85, 4.23) 0.12 1.81 (0.52, 6.24) 0.35
Duration of hypothermia (min) 1.01 (1.00, 1.01) 0.01* 1.00 (0.99, 1.01) 0.82
The incidence of hypothermia, n (%) 6.77 (0.90, 50.91) 0.06 4.61 (0.42, 51.13) 0.21
Operative time (min) 1.01 (1.01, 1.02) < 0.01* 1.02 (1.00, 1.04) 0.03*
Preoperative transfusion, n (%) 2.3 (0.95, 5.56) 0.07 1.44 (0.52, 4.00) 0.97
Duration of anesthesia (min) 1.00 (0.99, 1.01) 0.08 0.99 (0.98, 1.01) 0.48
Preoperative hemoglobin (g/dl) 1.00 (0.99, 1.01) 0.79   
Postoperative hemoglobin (g/dl) 1.00 (0.98, 1.01) 0.52   
Intraoperative blood loss (mL) 1.04 (0.98, 1.1) 0.17 0.99 (0.91, 1.05) 0.60
Postoperative ventilation (hours) 1.00 (1.00, 1.00) 0.10 1.00 (1.00, 1.00) 0.75
  1. Note: Clinically significant variables and those with p-value on univariate regression of < 0.20 were subsequently included in the multivariate regression model; 95% Confidence Intervals (95% CI), *P < 0.05 is statistically significant