Table 3.

One way ANOVA comparing sums of squares between and within groups

		Sum of squares	DF	Mean square	F statistic	Sig.
GAD-7 total score	Between groups	1350.20	4	337.60	9.90	< 0.01*
	Within groups	237·190.60	6929	34.20
	Total	238·540.80	6933
PHQ-9 total score	Between groups	7087.10	4	1771.80	45.90	< 0.01*
	Within groups	272·566.90	7067	38.60
	Total	279·654.50	7071
PSS total score	Between groups	5590.10	4	1397.50	30.50	< 0.01*
	Within groups	347·437.80	7572	45.90
	Total	353·027.90	7576

GAD-7, Generalized Anxiety Disorder 7 scale; PHQ, Patient Health Questionnaire; PSS, Perceived Stress Scale; DF, degree of freedom.

^*p < 0.05.