Table 4.

Between-group differences in intensity (n = 60)

	Mean	SD	P-valuec
Group 1 (n = 15)a	16.82	12.07	0.038
Group 2 (n = 15)	10.45	7.76
Group 3 (n = 15)b	12.46	9.41
Group 4 (n = 15)ab	6.46	6.21

^aP = 0.007, ^bP = 0.009 statistically significant after applying Bonferroni correction.

^cKruskal Wallis test followed by Mann Whitney-U test were used.

SD = standard deviation.