Table 3.

Intergroup comparison of numeric rating scale score for pain between test and control group at different time intervals

	n	Mean±SD	Range	Median (Q1-Q3)	Wilcoxon signed-rank test
					Z	P
1 h
Test	15	2.60±2.03	0-7	3 (1-4)	−2.08	0.04*
Control	15	3.20±2.31	0-7	3 (1-5)
2 h
Test	15	2.73±1.62	0-5	3 (1-4)	−2.80	0.005*
Control	15	3.73±2.09	1-8	3 (2-5)
3 h
Test	15	2.20±1.37	0-4	2 (1-3)	−2.99	0.003*
Control	15	3.47±1.64	1-6	3 (2-5)
4 h
Test	15	1.67±1.45	0-4	2 (0-3)	−2.97	0.003*
Control	15	2.67±1.84	0-6	3 (1-4)
5 h
Test	15	1.27±1.34	0-4	1 (0-2)	−2.75	0.006*
Control	15	2.13±1.64	0-4	2 (0-4)
24 h
Test	15	0.60±0.99	0-3	0 (0-1)	−2.12	0.03*
Control	15	1.20±1.21	0-4	1 (0-2)
48 h
Test	15	0.40±0.74	0-2	0 (0-1)	−1.41	0.16 (NS)
Control	15	0.53±0.83	0-2	0 (0-1)

*P<0.05 statistically significant; P>0.05 (NS). n – Total number of subjects; Q1 – Median in the lower half of the data; Q3 – Median for the upper half of data; Z – Confidence interval=1.96; NS – Nonsignificant; SD – Standard deviation; P – level of marginal significance