Table 5 Multiple linear regression analysis of determinants of hospital costs (USD) and length of hospital stay by laparoscopic appendectomy and open appendectomy

 Male vs. female

74.8 ± 2.6

346.9 ± 2.3^***

0.62 ± 0.02

1.59 ± 0.01^***

 15–29 y/o

38.7 ± 3.3

−50.4 ± 3.9

−0.20 ± 0.03

−0.47 ± 0.02

 30–44 y/o

164.4 ± 7^*

168.1 ± 5.2

0.75 ± 0.06

1.19 ± 0.02^**

 45–59 y/o

383.8 ± 10.1^***

876.4 ± 8.0^***

2.47 ± 0.08^***

5.19 ± 0.03^***

 60 y/o or more

676.5 ± 25.5^***

1464.0 ± 9.5^***

2.87 ± 0.20^**

5.81 ± 0.04^***

 1

976.3 ± 38.4^***

1092.9 ± 19.4^***

7.61 ± 0.30^***

4.82 ± 0.08^***

 ≥ 2

783.0 ± 59.5^***

1878.0 ± 34.6^***

2.74 ± 0.47^*

6.76 ± 0.14^***

 Yes vs. none

368.5 ± 4.3^***

784 ± 3.7^***

2.49 ± 0.03

4.58 ± 0.02^***

 Regional Hospital

39.7 ± 4.2

65.1 ± 2.7

−0.27 ± 0.03

−0.51 ± 0.01

 Medical Center

17.1 ± 4.4

527.2 ± 5.6^***

−0.88 ± 0.03

0.68 ± 0.02

 Suburban

−18.2 ± 6.4

−217.8 ± 4^*

0.19 ± 0.05

−0.60 ± 0.02

 Rural

−44.9 ± 280.2

−463.8 ± 38.8

−0.23 ± 2.17

−1.77 ± 0.16