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Table 1 Respondent characteristics by questionnaire package (N = 1277)

From: Order effects: a randomised study of three major cancer-specific quality of life instruments

Variable   Questionnaire Package  
   EORTC QLQ-C30 + FACT-G (N = 200) FACT-G + EORTC QLQ-C30(N = 240) EORTC QLQ-C30 + FLIC (N = 233) FLIC + EORTC QLQ-C30 (N = 188) FACT-G + FLIC (N = 215) FLIC + FACT-G (N = 201) p-value(a)
Age Mean (SD) 51.0 (12.0) 51.6 (12.5) 50.6 (9.9) 51.0 (10.3) 51.4 (10.5) 51.4 (11.6) 0.933
Gender Male 43.5% 40.8% 36.1% 41.0% 43.7% 38.3% 0.547
  Female 56.5% 59.2% 64.0% 59.0% 56.3% 61.7%  
Race Chinese 88.0% 91.3% 90.6% 91.0% 90.7% 89.1% 0.446
  Malay 6.5% 4.6% 3.4% 2.7% 3.7% 4.5%  
  Indian 4.0% 3.8% 3.0% 4.3% 2.3% 5.5%  
  Others 1.5% 0.4% 3.0% 2.1% 3.3% 1.0%  
Education Primary or below 22.1% 20.4% 21.0% 19.2% 23.8% 21.9% 0.212
  Secondary 44.7% 43.8% 49.4% 57.9% 45.3% 47.8%  
  Post-secondary 33.2% 35.8% 29.6% 22.9% 30.8% 30.4%  
ECOG 0–1 75.5% 72.5% 75.1% 71.8% 69.8% 72.0% 0.772
  2–4 24.5% 27.5% 24.9% 28.2% 30.2% 28.0%  
Treatment Inactive 59.0% 69.6% 59.2% 61.7% 60.9% 62.7% 0.186
  Active 41.0% 30.4% 40.8% 38.3% 39.1% 37.3%  
Tumor Breast 30.5% 33.8% 40.8% 33.0% 33.0% 34.8% 0.719
  Lung 7.5% 8.3% 5.6% 6.4% 9.8% 10.0%  
  Colo-rectal 14.5% 10.8% 12.0% 13.8% 13.5% 11.9%  
  Gynaecological 5.0% 5.8% 3.4% 9.0% 4.7% 6.5%  
  Nasopharyngeal 13.5% 13.3% 12.5% 13.3% 14.4% 16.4%  
  Head & Neck 8.0% 5.8% 5.2% 5.9% 5.1% 7.00%  
  Others 21.0% 22.1% 20.6% 18.6% 19.5% 13.4%  
Self-administered Yes 76.5% 79.6% 76.8% 75.5% 75.4% 73.1% 0.738
  No 23.5% 20.4% 23.2% 24.5% 24.7% 26.9%  
Language English 57.5% 56.7% 49.8% 51.1% 60.0% 57.2% 0.219
  Chinese 42.5% 43.3% 50.2% 48.9% 40.0% 42.8%  
  1. (a) Difference between six questionnaire packages tested by ANOVA for age and Chi-square for categorical variables.