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

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