Total

Hiccups (n = 48)

Non-hiccups (n = 244)

P-value

Odds ratio

95% CI

Pain

27

11

16

0.0013

4.24

1.82 - 9.84

Nausea and vomiting

19

13

6

<0.0001

14.73

5.26 - 41.28

Constipation two days or more

21

4

17

0.7597

1.21

0.39 - 3.78

Intubation tube

1

0

1

1

0.00

-

Urinary tract

4

3

1

0.0149

16.20

1.62 - 159.24

Central venous catheter

10

3

7

0.2159

2.26

0.56 - 9.06

Peripheral venous catheter

211

26

185

0.0042

0.38

0.20 - 0.71