Table 3.

Group Differences According to GPA

(I) GPA	(J) GPA	Mean Difference (I-J)	Std. Error	P
≤3.5	3.51–4.50	−5.02941-	1.42208	<0.001
	≥4.51	−5.93678-	1.51826	<0.001
3.51–4.50	≤3.5	5.02941	1.42208	<0.001
	≥4.51	−0.90737-	0.71240	0.205
≥4.51	≤3.5	5.93678	1.51826	<0.001
	3.51–4.50	0.90737	0.71240	0.205