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Table 1 Characteristics of the study participants

From: Psychometric properties of the Iranian interview-administered version of the World Health Organization's Quality of Life Questionnaire (WHOQOL-BREF): A population-based study

  All (n = 1164) Healthy individuals (n = 906) Ill individuals (n = 258)
Age (years)    
Mean (SD) 36.6 (13.2) 34.3 (12.4) 44.9 (12.5)
Education (years)    
Mean (SD) 10. 7 (4.4) 11.3 (4.0) 8.9 (5.1)
Sex (%)    
Male 47.9 50.9 37.6
Female 52.1 49.1 62.4
Marital status (%)    
Single 27.5 32.5 12
Married 67.8 63.7 81.4
Widowed/separated 4.6 3.8 6.6