Table 2.

Showing Pain scores, morphine requirement and patient satisfaction scores in the two groups.

Variable		ISB (CI)	IA (CI)	P Value∗∗
Mean VAS (range)	PACU	1.44 (1.20–1.68)	2.15 (1.92–2.39)	<0.0001
	4 h	1.16 (.88–1.43)	2.38 (2.11–2.65)	<0.0001
	24 h	1.24 (0.93–1.54)	2.96 (2.66–3.25)	<0.0001
	48 h	0.8 (0.49–1.11)	2.27 (1.96–2.57)	<0.0001
Morphine (mg/24hrs)		4.6 (1.87–7.33)	18.8 (16.17–21.52)	<0.0001
Mean duration of pain relief (hours)		20.5 (12–36)	4.2 (2–7)	<0.001
Patient satisfaction scores (% & no of patients)	Excellent	80% (42)	50% (26)	<0.001
	Good	16% (8)	12% (6)
	Poor	4% (2)	30% (16)
	Unsatisfied	0	8% (5)

^∗∗Student t-test.