Table 6.

Intergroup comparison of numeric rating scale score for internal swelling 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	0.80±1.08	0-3	0 (0-1)	−1.73	0.08 (NS)
Control	15	1.00±1.20	0-4	1 (0-1)
2 h
Test	15	0.73±0.96	0-3	0 (0-1)	−2	0.04*
Control	15	1.00±1.07	0-3	1 (0-2)
3 h
Test	15	0.73±0.88	0-3	1 (0-1)	−2	0.04*
Control	15	1.00±1.00	0-3	1 (0-1)
4 h
Test	15	0.47±0.74	0-2	0 (0-1)	−1.34	0.18 (NS)
Control	15	0.67±0.82	0-3	1 (0-1)
5 h
Test	15	0.27±0.46	0-1	0 (0-1)	−1.73	0.08 (NS)
Control	15	0.47±0.64	0-2	0 (0-1)
24 h
Test	15	0.07±0.26	0-1	0 (0-0)	−1.41	0.16 (NS)
Control	15	0.20±0.41	0-1	0 (0-0)
48 h
Test	15	0.07±0.26	0-1	0 (0-0)	−1	0.32 (NS)
Control	15	0.13±0.35	0-1	0 (0-0)

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