Effect of different low doses of intrathecal morphine (0.1 and 0.2 mg) on pain and vital functions in patients undergoing total hip arthroplasty: a randomised controlled study

Table 3 Pain level after THA at different timepoints within 24 h after surgery

Time after surgery, hours	Control group, NRS points (95% CI)	ITM 0.1 mg, NRS points (95% CI)	ITM 0.2 mg, NRS points (95% CI)	p
4 h	1.21 (0.2,2.22)	0.48 (0.03,1.00)	0.17 (0.18,0.53)	0.068
7 h	2.62 (1.57,3.63)	1.00 (0.12,1.81)	0.17 (0.12,0.46)	< 0.001
12 h	3.08 (1.92,4.24)	0.65 (0.01,1.32)	0.37 (0.07,0.83)	< 0.001
24 h	2.50 (1.35,3.65)	1.20 (0.38,2.03)	0.41 (0.07,0.9)	0.001

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