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Table 2 Item scores and scale correlations for study participants

From: 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

Over the last two weeks, how often have you been bothered by the following problemsMean (SD)Score distribution %aItem–total correlationbCorrected item-total correlation
Anxiety screener (GAD-2) sum score1.79 (1.71)      
1. Feeling nervous, anxious or on edge0.92 (1.01)46.0025.0619.549.400.760.64
2. Not being able to stop or control worrying0.87 (0.98)47.8226.0117.978.200.760.64
Depression screener (PHQ-2) sum score1.96 (1.66)      
3. Little interest or pleasure in doing things0.85 (0.97)48.1526.0518.557.250.730.60
4. Feeling down, depressed or hopeless1.11 (1.01)35.0430.8722.4211.670.740.59
Total score (PHQ4)3.75 (2.98)      
  1. 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).
  2. 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)