Table 4.

Univariate analysis of variable versus length of stay for patients undergoing hepatic resection during March 2005 to June 2011

Variable (n = 128 resections)	Days, median (range)	P-value
Age, years, median (range)
Quartile 1: 48 (35–54)	4 (2–30)
Quartile 2: 60 (54–64)	4.5 (2–111)	0.204
Quartile 3: 66 (63–69)	4 (2–34)	0.555
Quartile 4: 76 (70–82)	5 (2–22)	0.113
ASA score: 1 or 2 (n = 104)	4 (2–34)
3 or 4 (n = 24)	6.5 (2–11)	<0.001
Epidural (n = 9)	8.5 (5–30)
Intrathecal morphine (n = 111)	4 (2–111)	0.003
Blood loss: <0.5 l (n = 86)	4 (2–25)
0.5–1.0 l (n = 33)	4 (2–111)	0.148
>1.0 l (n = 9)	8 (5–30)	0.005
Hepatectomy: minor (n = 64)	4 (2–24)
Major (n = 64)	4 (2–111)	0.159
Anastomosis: No (n = 118)	11 (4–30)
Yes (n = 10)	4 (2–111)	<0.001
Use of drain: No (n = 103)	4 (2–111)
Yes (n = 25)	8 (3–30)	<0.001
NSAIDs use: No (n = 70)	5 (2–111)
Yes (n = 58)	4 (2–34)	0.001
Wound catheter use: None (n = 28)	4 (2–111)
Intermittent (n = 49)	4 (2–34)	0.159
Continuous (n = 51)	5 (2–30)	0.035
Postoperative i.v. fluid in first 24 h, median (range)
Quartile 1: 1 l (0–2 l)	4 (2–24)
Quartile 2: 2 l (2–3 l)	3 (2–25)	0.641
Quartile 3: 3 l (3–4 l)	3 (2–10)	0.850
Quartile 4: 5 l (4–9 l)	6 (2–34)	0.001
Total i.v. fluid, median (range)
Quartile 1: 2 l (0–3 l)	3 (2–22)
Quartile 2: 3 l (3–4 l)	3 (2–10)	0.200
Quartile 3: 5 l (4–7 l)	5 (2–24)	0.001
Quartile 4: 10 l (7–58 l)	6 (3–11)	<0.001
Presence of complications
No (n = 94)	4 (2–24)
Yes (n = 34)	8 (2–111)	<0.001
Hepatic resection number
Quartile 1	6 (2–30)
Quartile 2	4 (2–111)	0.066
Quartile 3	4 (2–34)	0.003
Quartile 4	3 (2–24)	0.021

ASA, American Society of Anesthesiologists; NSAIDs, non-steroidal anti-inflammatory drugs.