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Table 3 Summary descriptive statistics for the SF-36 v.2 scales. PDSD, 2008 (n = 12.423)

From: Psychometric evaluation of the SF-36 (v.2) questionnaire in a probability sample of Brazilian households: results of the survey Pesquisa Dimensões Sociais das Desigualdades (PDSD), Brazil, 2008

 

PF

RP

BP

GH

VT

SF

RE

MH

Reliability*

0.96

0.96

0.84

0.79

0.73

0.73

0.94

0.78

Standard deviation

13.36

11.92

11.68

11.42

11.05

10.48

12.99

12.03

Skewness

-1.10

-1.12

-1.01

-0.87

-0.76

-1.45

-1.42

-0.88

Kurtosis

-0.11

-0.02

-0.09

-0.04

0.10

1.20

0.93

0.30

Ceiling (%)

44.90

53.30

43.30

5.50

13.40

58.50

60.60

14.90

Floor (%)

3.90

3.80

1.40

0.70

0.40

0.70

3.10

0.20

Item internal consistency#

0.61-0.87

0.90-0.92

0.72

0.50-0.69

0.48-0.55

0. 58

0.84-0.91

0.47-0.62

Item discriminant validity&

0.06-0.50

0.14-0.66

0.18-0.58

0.15-0.46

0.12-0.62

0.23-0.58

0.16-0.66

0.06-0.62

  1. (*) Cronbach alpha coefficient; (#) correlation between items and hypothesized scales corrected for attenuation; (&) correlation between items and other scales; PF - physical functioning, RP - role physical, BP - Bodily pain, GH- general health, VT - vitality, SF- social functioning, RE- role emotional, MH - mental health.