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Table 2 SF-12v2 item-level characteristics and PCS/MCS scores among adults with hemophilia

From: An evaluation of the psychometric properties of the sf-12v2 health survey among adults with hemophilia

Items

N

Missing

Mean (SD)

Skewness

Kurtosis

Statistic

Std. error

Statistic

Std. error

Health in general (GH01)

218

0

2.89 (0.94)

0.28

0.164

−0.22

0.327

Limitation in moderate activities (PF02)

218

0

2.25 (0.68)

−0.36

0.164

−0.86

0.327

Limitation in climbing stairs (PF03)

218

0

2.17 (0.78)

−0.3

0.164

−1.00

0.327

Accomplished less due to physical health (RP04)

218

0

3.32 (1.27)

−0.24

0.164

−0.88

0.327

Limited in health due to physical health (RP05)

218

0

3.25 (1.26)

−0.12

0.164

−0.96

0.327

Pain interfered with work (BP08)

218

0

2.91 (1.18)

0.09

0.164

−0.94

0.327

Have a lot of energy (VT10)

218

0

3.09 (1.03)

0.1

0.164

−0.50

0.327

Physical health or emotional problems interfered with social activities (SF12)

218

0

3.57 (1.12)

−0.43

0.164

−0.42

0.327

Accomplished less due to emotional problems (RE06)

218

0

3.55 (1.29)

−0.46

0.164

−0.95

0.327

Less careful due to emotional problems (RE07)

218

0

3.80 (1.20)

−0.63

0.164

−0.62

0.327

Felt calm and peaceful (MH09)

218

0

2.62 (0.98)

0.42

0.164

−0.36

0.327

Felt downhearted and depressed (MH11)

218

0

3.65 (1.10)

−0.55

0.164

−0.47

0.327

PCS score

218

0

43.68 (10.20)

−0.62

0.164

0.61

0.327

MCS score

218

0

46.48 (10.09)

−0.72

0.165

1.23

0.328

  1. Note: Responses to the items on the SF-12v2 were measured using 3-point (PF02 and PF03) or 5-point (GH01, RP04, RP05, RE06, RE07, BP08, MH09, VT10, MH11, SF12) response scales
  2. Note: GH01, BP08, MH09, and VT10 are SF-12v2 items where higher scores indicate poorer health status; all other items are scored such that higher scores indicate better health status