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.