Table 4.

Comparison of group 1 and group 2 with PPD scores at different time intervals by Mann–Whitney U test

Groups	Baseline		1 Week		1 Month		Changes from baseline to
							1 Week		1 Month
	Mean	SD	Mean	SD	Mean	SD	Mean	SD	Mean	SD
Group 1	3.89	0.72	3.76	0.78	3.41	0.84	0.12	0.27	0.47	0.73
Group 2	3.78	0.85	3.49	0.91	3.04	0.66	0.29	0.42	0.74	0.53
Total	3.83	0.79	3.62	0.85	3.23	0.77	0.21	0.36	0.61	0.65
% of change in group 1							3.20%#, P = 0.0006*		12.20%#, P = 0.0010*
% of change in group 2							7.66%#, P = 0.0001*		19.50%#, P = 0.0001*
Z-value	−1.1258		−1.9293		−2.0207		−3.1273		−0.1203
P-value	0.2602		0.0537		0.0433*		0.0018*		0.9043

*P < 0.05 indicates significant at 5% level

#Applied Wilcoxon matched pairs test