Table 3.

Least significance difference test for intergroup comparison based on FS among various groups

Group comparison	Mean difference	p-value	95% confidence interval
			Lower bound	Upper bound
I vs II	−22.55	<0.001*	−24.90	−20.21
I vs III	−5.71	<0.001*	−8.05	−3.36
I vs IV	−19.06	<0.001*	−21.41	−16.72
I vs V	−24.16	<0.001*	−26.50	−21.82
I vs VI	−11.26	<0.001*	−13.60	−8.92
II vs III	16.85	<0.001*	14.50	19.19
II vs IV	3.49	0.004*	1.15	5.83
II vs V	−1.61	0.175	−3.95	0.73
II vs VI	11.29	<0.001*	8.95	13.64
III vs IV	−13.36	<0.001*	−15.70	−11.02
III vs V	−18.46	<0.001*	−20.80	−16.11
III vs VI	−5.55	<0.001*	−7.90	−3.21
IV vs V	−5.10	<0.001*	−7.44	−2.75
IV vs VI	7.81	<0.001*	5.46	10.15
V vs VI	12.90	<0.001*	10.56	15.25

*Statistically significant difference (p-value < 0.05); *p<0.05, significant difference; **p< 0.001, highly significant difference