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Table 2 Patient demographic data, length of stay and financial data by complication group for matched and unmatched samples a

From: The impact of complications following open colectomy on hospital finances: a retrospective cohort study

  Entire cohort (N = 276) Matched sample (n = 100)
Variable Uncomplicated Complications P-value Difference Uncomplicated Complications P-value Difference
Patients, n (%) 215 (78%) 61 (22%) 50 50
Mean age, years (SD) 60.2 (14.8) 62.9 (13.3) 0.20 2.7 63.6 (12.9) 63.7 (12.3) 0.97 0.1
Females, n (%) 113 (53%) 27 (44%) 0.25 24 (48%) 24 (48%) 1.0
ASA class, mean (SD) 2.5 (0.5) 2.6 (0.5) 0.21 0.1 2.6 (0.50) 2.6 (0.50) 1.0 0
BMI, mean (SD) 28.4 (7.3) 28.7 (6.3) 0.74 0.3 28.1 (6.4) 28.2 (5.7) 0.93 0.1
LOS (days), mean (SD) 7.3 (2.4) 15.6 (7.8) <0.001 8.3 7.4 (2.1) 15.9 (7.5) <0.001 8.5
Total cost, mean (SD) $23,101 (6,914) $48,180 (26,596) <0.001 $25,079 $23,381 (6,712) $49,733 (28,279) <0.001 $26,351
Fixed cost, mean (SD) $14,516 (4,252) $30,229 (16,340) <0.001 $15,713 $14,807 (4,509) $31,233 (17,333) <0.001 $16,426
Variable cost, mean (SD) $8,535 (2,904) $17,848 (10,356) <0.001 $9,313 $8,526 (2,656) $18,397 (11,066) <0.001 $9,871
Reimbursement, mean (SD) $23,231 (6,761) $35,651 (13,445) <0.001 $12,420 $23,632 (7,110) $35,739 (13,327) <0.001 $12,108
Total margin, mean (SD) $131 (8,309) -$12,528 (26,113) 0.001 -$12,659 $250 (7,781) -$13,993 (27,144) <0.001 -$14,244
  1. aASA: American Society of Anesthesiology; BMI: Body mass index. Total margin = Reimbursement - Total cost. Financial data are US dollars.