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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.