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Table 1 Results of the item analysis and the item-total correlation analysis of the German Capability for Suicide Questionnaire

From: Validation of the German capability for suicide questionnaire (GCSQ) in a high-risk sample of suicidal inpatients

Item number

M

SD

Range

Skewness

Kurtosis

Item difficulty

Corrected item-total correlation

1

2.976

1.511

1-5

0.029

−1.444

59.52

0.525

2

2.887

1.554

1-5

0.183

−1.513

57.74

0.606

3

3.415

1.470

1-5

−0.387

−1.312

68.30

0.826

4

3.412

1.473

1-5

−0.391

−1.294

68.24

0.825

5

3.461

1.495

1-5

−0.425

−1.298

69.22

0.715

6

3.993

1.248

1-5

−1.145

0.240

79.86

–

7

3.399

1.132

1-5

−0.435

−0.901

67.98

0.413

8

3.276

1.398

1-5

−0.245

−1.241

65.52

0.367

9

3.584

1.249

1-5

−0.530

−0.789

71.68

0.695

10

3.646

1.341

1-5

−0.613

−0.857

72.92

0.590

11

3.835

1.207

1-5

−0.946

−0.047

76.70

0.388

  1. Note: Corrected item-total correlations for items 1-5 were calculated for the GCSQ-FAD factor, and for items 7-11 for the GCSQ-PT factor