Dosage of epidural morphine analgesia after lower abdominal cancer surgery: a randomized clinical trial among the older adults

Table 3 Analysis of VAS scores over time (baseline, 2 h., 8 h., 16 h., 24 h., 36 h., 48 h., 72 h.) using the general linear model

Variable	1.5 mg epidural morphine	3 mg epidural morphine	4.5 mg epidural morphine	0 mg epidural morphine	P value
Vas scores over time	4.5 ± 0.2 [4.2, 4.9]	2.5 ± 0.2 [2.1, 2.8]	2 ± 0.2 [1.6, 2.3]	5 ± 0.2 [4.7, 5.4]	0.000^**

The data are presented as the means ± SEs [95% CIs]
^**P value > 0.05 (Bonferroni corrected) for 0 mg vs. 1.5 mg and 3 mg vs. 4.5 mg

ISSN: 2047-0525