Table 4.

Pairwise comparisons at post-test writing performance.

(I) group	(J) group	Mean difference (I-J)	Std. error	p a	95% confidence interval of difference
					Lower bound	Upper bound
1	2	−2.012	1.677	0.232	−5.318	1.294
	3	−4.714*	1.666	0.005	−7.997	−1.430
2	1	2.012	1.677	0.232	−1.294	5.318
	3	−2.702	1.684	0.110	−6.021	0.618
3	1	4.714*	1.666	0.005	1.430	7.997
	2	2.702	1.684	0.110	−0.618	6.021

^*The mean difference is significant at the 0.05 level.

^aAdjustment for multiple comparisons: Least Significant Difference (equivalent to no adjustments).