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Table 3 Item Internal consistency of the scales

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 2 weeks, how often have you been
bothered by the following problems
a4-Item alpha2-Item alphabalpha if item- dropped
Anxiety (GAD-2)
 1. Feeling nervous, anxious or on edge0.810.740.75
 2. Not being able to stop or control worrying  0.74
Depression (PHQ-2)  0.77
 3. Little interest or pleasure in doing things 0.650.77
 4. Feeling down, depressed or hopeless   
  1. aThe overall alpha (Cronbach’s α: Indicates the internal reliability of the four items (conducted with the entire sample)); bValues of the overall alpha (Cronbach’s) if that item isn’t included in the calculation