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Table 3 Internal consistency: sensitivity analysis for the CES-D in suicide attempters and comparison residents

From: Reliability and validity of the Center for Epidemiologic Studies Depression Scale (CES-D) among suicide attempters and comparison residents in rural China

  Suicide attempters Controls
Items M SD r α M SD r α
Depression 1 22.21 4.04 0.74 0.94 2.92 2.50 0.47 0.89
Depression 2 22.54 4.05 0.66 0.94 2.87 2.49 0.40 0.89
Depression 3 22.25 4.04 0.75 0.94 2.94 2.48 0.68 0.88
Depression 4 22.16 4.05 0.65 0.94 2.85 2.47 0.50 0.89
Depression 5 22.51 4.05 0.67 0.94 2.93 2.52 0.26 0.89
Depression 6 21.93 4.03 0.84 0.94 2.87 2.46 0.70 0.88
Depression 7 22.33 4.04 0.73 0.94 2.83 2.46 0.59 0.88
Depression 8 22.06 4.04 0.72 0.94 2.88 2.48 0.54 0.89
Depression 9 22.31 4.04 0.74 0.94 2.97 2.50 0.52 0.89
Depression 10 23.26 4.13 0.30 0.95 3.00 2.52 0.36 0.89
Depression 11 22.35 4.05 0.65 0.94 2.75 2.46 0.51 0.89
Depression 12 21.81 4.04 0.74 0.94 2.88 2.47 0.57 0.88
Depression 13 22.37 4.05 0.68 0.94 2.91 2.50 0.43 0.89
Depression 14 22.67 4.07 0.59 0.94 2.93 2.49 0.56 0.89
Depression 15 23.23 4.13 0.31 0.95 2.96 2.50 0.44 0.89
Depression 16 22.01 4.04 0.72 0.94 2.89 2.48 0.49 0.89
Depression 17 22.81 4.09 0.56 0.94 3.01 2.52 0.47 0.89
Depression 18 21.98 4.03 0.78 0.94 2.85 2.45 0.71 0.88
Depression 19 23.26 4.13 0.30 0.95 3.01 2.52 0.43 0.89
Depression 20 22.18 4.03 0.80 0.94 2.88 2.45 0.73 0.88
  1. M: Scale mean if item deleted; SD: Standard deviation; r: Corrected item-total correlation.
  2. α: Cronbach’s alpha if item deleted.
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