Table 2. Comparison of depression, anxiety and stress between the four study groups .

Psychological disorder	Comparison of groups		P-value
	j	i
Depression	2	1	<0.01*
	3	1	<0.01*
	4	1	<0.001*
	3	2	<0.01**
	4	2	<0.001**
	4	3	<0.01**
Stress	2	1	<0.01*
	3	1	<0.01*
	4	1	<0.001*
	3	2	<0.01**
	4	2	<0.001**
	4	3	<0.01**
Anxiety	2	1	<0.001**
	3	1	<0.01*
	4	1	<0.001*
	3	2	<0.01*
	4	2	<0.001*
	4	2	<0.01*

‏*c²test

‏**Fisher’s exact test