Table 2.

Intercomparison between various groups

(I) group	(J) group	Mean difference (I–J)	Std. error	Sig.	95% confidence interval
					Lower bound	Upper bound
I	II	1.677	0.391	0.03*	0.62	2.73
	III	1.055	0.380	0.04*	0.03	2.08
	IV	1.955	0.380	0.000*	0.93	2.98
II	I	−1.677	0.391	0.002*	−2.73	−0.62
	III	−0.622	0.399	0.004*	−1.70	0.45
	IV	0.278	0.399	0.007*	−0.80	1.35
III	I	−1.055	0.380	0.04*	−2.08	−0.03
	II	0.622	0.399	0.002*	−0.45	1.70
	IV	0.900	0.389	0.113**	−0.15	1.95
IV	I	−1.955	0.380	0.000*	−2.98	−0.93
	II	−0.278	0.399	0.005*	−1.35	0.80
	III	−0.900	0.389	0.113**	−1.95	0.15