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Table 1 Results of item scaling tests and reliability estimates for SF-36 scales.

From: The validity of the SF-36 in an Australian National Household Survey: demonstrating the applicability of the Household Income and Labour Dynamics in Australia (HILDA) Survey to examination of health inequalities

  

Range of item correlations

 
 

No. of items

Item-internal consistency1

Item-discriminant validity2

Scale Reliability3

SF-36 scale

    

Physical Functioning

10

0.55 – 0.81

0.14 – 0.55

0.93

Role Physical

4

0.76 – 0.81

0.24 – 0.60

0.90

Bodily Pain

2

0.80

0.32 – 0.67

0.87

General Health

5

0.47 – 0.77

0.22 – 0.57

0.82

Vitality

4

0.63 – 0.67

0.24 – 0.59

0.83

Social Functioning

2

0.71

0.42 – 0.60

0.83

Role Emotional

3

0.68 – 0.72

0.27 – 0.54

0.83

Mental Health

5

0.54 – 0.69

0.15 – 0.57

0.82

  1. 1 Correlations between items and scale corrected for overlap.
  2. 2 Correlations between items and other scales.
  3. 3 Internal-consistency reliability (cronbach's alpha).
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BMC Public Health

ISSN: 1471-2458

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