Skip to main content

Advertisement

Table 3 Receiver operating curve analyses for major depression for each screening instrument

From: A study of the diagnostic accuracy of the PHQ-9 in primary care elderly

  N* PHQ-9 AUC (95% CI) PHQ-2 AUC (95% CI) GDS AUC (95% CI)
Overall 69 0.87 (0.74-1.00) 0.81 (0.65-0.98) 0.81 (0.70-0.91)
Gender     
   Male 26 0.88 (0.72-1.00) 0.91 (0.78-1.00) 0.76 (0.58-0.93)
   Female 43 0.85 (0.61-1.00) 0.70 (0.37-1.00) 0.84 (0.70-0.98)
Race     
   White 47 0.88 (0.73-1.00) 0.87 (0.75-0.99) 0.85 (0.74-0.95)
   Non-white 22 0.93 0.31 0.90
Age     
   < 80 years 38 0.92 (0.81-1.00) 0.81 (0.54-1.00) 0.82 (0.68-0.96)
   ≥80 years 31 0.80 (0.52-1.00) 0.83 (0.64-1.00) 0.80 (0.62-0.98)
Comorbidities     
   < 3 41 0.93 (0.82-1.00) 0.92 (0.85-1.00) 0.79 (0.55-1.00)
   ≥3 28 0.80 (0.57-1.00) 0.71 (0.43-0.99) 0.82 (0.67-0.97)
  1. * N is for PHQ-9 and PHQ-2; GDS is missing for one participant.
  2. AUC = area under the receiver operating characteristic curve. Values range from ≤0.5 (no discriminatory ability) to 1.0 (perfect discrimination -- in this case, of depressed from non-depressed).
  3. CI = confidence interval.
  4. § Only one of the 22 non-white participants had a positive SCID, and therefore no confidence interval could be calculated.