Table 6.

Matrix of Correlations Between EWQ1-8 and PHQ-9 Factors

Correlation Matrix
		EWQ1	EWQ2	EWQ3	EWQ4	EWQ5	EWQ6	EWQ7	EWQ8	PHQ 1	PHQ 2	PHQ 3	PHQ 4	PHQ 5	PHQ 6	PHQ 7	PHQ 8	PHQ 9
EWQ1	(r)	—
EWQ2	(r)	0.571	—
EWQ3	(r)	0.626	0.562	—
EWQ4	(r)	0.57	0.538	0.686	—
EWQ5	(r)	0.383	0.436	0.44	0.402	—
EWQ6	(r)	0.628	0.476	0.535	0.521	0.413	—
EWQ7	(r)	0.635	0.624	0.566	0.585	0.342	0.62	—
EWQ8	(r)	0.613	0.635	0.57	0.524	0.428	0.429	0.635	—
PHQ 1	(r)	0.408	0.438	0.409	0.347	0.41	0.391	0.458	0.403	—
PHQ 2	(r)	0.562	0.338	0.559	0.457	0.417	0.447	0.503	0.429	0.599	—
PHQ 3	(r)	0.311	0.29	0.291	0.385	0.241	0.253	0.246	0.293	0.35	0.428	—
PHQ 4	(r)	0.366	0.341	0.428	0.436	0.334	0.248	0.264	0.317	0.39	0.399	0.684	—
PHQ 5	(r)	0.117	0.147	0.085	0.135	0.257	0.172	0.186	0.156	0.345	0.286	0.333	0.439	—
PHQ 6	(r)	0.538	0.279	0.561	0.498	0.338	0.555	0.48	0.384	0.446	0.47	0.249	0.273	0.189	—
PHQ 7	(r)	0.262	0.3	0.396	0.35	0.23	0.254	0.257	0.323	0.371	0.319	0.453	0.545	0.391	0.265	—
PHQ 8	(r)	0.313	0.451	0.413	0.583	0.285	0.245	0.341	0.385	0.245	0.211	0.21	0.328	0.039	0.123	0.345	—
PHQ 9	(r)	0.329	0.259	0.555	0.487	0.496	0.355	0.364	0.414	0.384	0.373	0.265	0.361	0.135	0.395	0.34	0.23	—

Note: Correlations ≥ 0.50 are highlighted in bold to indicate stronger relationships.

Abbreviations: EWQ, Emotional Well-being Questionnaire; PHQ, Patient Health Questionnaire.