Table 2.

Mean and standard deviation of pre–post operative comparison in groups 1 and 2 and Paired sample t test in groups 1 and 2 to determine p value

Group (n = 15)	Mean	SD	95 % confidence interval of the difference		Mean difference (pre–post)	p value (pre–post)
Group 1
Pre	31.1333	1.40746	Lower	Upper	4.6	<0.001
Post	35.7333	1.33452	−5.12536	−4.07464
Group 2
Pre	31.3000	2.85857	Lower	Upper	1.06667	<0.001
Post	32.37	2.75	0.79	1.34