TABLE 2.

Average VAS score in group B and group S at baseline and up to 72 hours

Time	Group S; median (IQR)	Group B; median (IQR)	Mann-Whitney Wilcoxon rank sum test P-value
Baseline	7 (6–7.5)	6.5 (6–8)	0.50
Half hour	4 (4–5)	6 (4–6)	0.043
1st hour	2 (0–2)	4 (2–4)	0.0001
2nd hour	0 (0–2)	2 (2–4)	0.770
24 hours	0	0 (0–2)	0.645
48 hours	0	0 (0–2)	0.575
72 hours	0	0	0.550
Kruskal-Wallis test	χ2 with ties = 106.240 with 6 d.f. P = 0.0001	χ2 with ties = 106.269 with 6 d.f. P = 0.0001

IQR – inter quartile range, d.f. – degrees of freedom