Post Laparoscopy Pain Reduction Project I (POLYPREP I): intraperitoneal normal saline instillation—a randomised controlled trial

Table 2 Postoperative shoulder pain

Postoperative duration (h)	Control, n = 34		INSI, n = 34		p-value
Postoperative duration (h)	Pain score (mean ± SD)	95% CI	Pain score (mean ± SD)	95% CI	p-value
At rest
24	0.88 ± 1.49	0.36, 1.40	0.50 ± 1.33	0.04, 0.96	0.269
48	0.50 ± 1.14	0.10, 0.90	0.15 ± 0.50	− 0.03, 0.32	0.102
72	0.26 ± 0.90	− 0.05, 0.58	0.00 ± 0.00	0.00, 0.00	0.90
On movement
24	1.41 ± 2.03	0.70, 2.12	0.91 ± 1.96	0.23, 1.60	0.305
48	1.06 ± 2.10	0.33, 1.79	0.53 ± 1.26	0.09, 0.97	0.212
72	0.53 ± 1.44	0.03, 1.03	0.12 ± 0.537	− 0.07, 0.31	0.123

Data expressed as mean ± SD (standard deviation) and 95% CI (confidence interval for mean). The test of significance was performed by one-way ANOVA test
CI, confidence interval; INSI, intraperitoneal normal saline; SD, standard deviation

ISSN: 1472-6874