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Table 2 Comparing variables in patients with and without increased surgical drain output

From: Risk factors for predicting increased surgical drain output in patients after anterior cervical corpectomy and fusion

Characteristics Patients with increased surgical drain output P
Yes (n = 36) No (n = 181)
Operation time (min) 112.22 ± 16.49 105.21 ± 17.89 0.031
Intraoperative blood loss (mL) 109.86 ± 62.02 87.83 ± 56.40 0.036
Drainage (mL) 94.44 ± 37.70 16.17 ± 14.27 0.000
Length of drainage (h) 86.00 ± 25.25 50.87 ± 17.67 0.000
Hemoglobin (g/dL)
 Baseline 135.86 ± 11.60 138.27 ± 14.19 0.339
 Day 1 postoperation 128.06 ± 11.65 129.33 ± 13.03 0.586
 At discharge 130.92 ± 13.31 132.38 ± 15.64 0.601
Hematocrit (%)
 Baseline 39.95 ± 3.24 40.64 ± 3.83 0.314
 Day 1 postoperation 37.98 ± 4.03 37.79 ± 3.83 0.791
 At discharge 38.27 ± 3.81 38.95 ± 3.39 0.283
Length of stay (d) 5.17 ± 1.23 4.62 ± 1.45 0.036