The psychometric properties of PHQ-4 anxiety and depression screening scale among out of school adolescent girls and young women in Tanzania: a cross-sectional study

Table 2 Item scores and scale correlations for study participants

Over the last two weeks, how often have you been bothered by the following problems	Mean (SD)	Score distribution %				^aItem–total correlation	^bCorrected item-total correlation
		0	1	2	3
Anxiety screener (GAD-2) sum score	1.79 (1.71)
1. Feeling nervous, anxious or on edge	0.92 (1.01)	46.00	25.06	19.54	9.40	0.76	0.64
2. Not being able to stop or control worrying	0.87 (0.98)	47.82	26.01	17.97	8.20	0.76	0.64
Depression screener (PHQ-2) sum score	1.96 (1.66)
3. Little interest or pleasure in doing things	0.85 (0.97)	48.15	26.05	18.55	7.25	0.73	0.60
4. Feeling down, depressed or hopeless	1.11 (1.01)	35.04	30.87	22.42	11.67	0.74	0.59
Total score (PHQ4)	3.75 (2.98)

Scale items scored 0, 1, 2, 3 based on responses provided (not at all, several days, more than half the days, and nearly every day).
^aCorrelation between the item and the total score from the scale (i.e. the item itself is included in the total); ^bCorrelation between the item and the overall score from the scale (i.e. the item itself is not included in the total)

ISSN: 1471-244X