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Table 1 Standard deviations for generic and vision specific health-related quality of life scores as obtained from baseline assessment of 2,261 participants enrolled in the Longitudinal Study of Ocular Complications in AIDS (LSOCA)

From: Interviewer versus self-administered health-related quality of life questionnaires - Does it matter?

Generic instruments Vision-specific instruments
Instrument and domain Standard deviation 0.2 of pooled standard deviation (defined here as meaningful difference) Instrument and domain Standard deviation 0.2 of pooled standard deviation (defined here as meaningful difference)
  Self Interview    Self Interview  
MOS-HIV     VFQ-25    
   General health 21.7 23.2 4.5 Composite score 14.0 17.6 3.0
   Physical function 26.8 27.9 5.4 General vision 16.0 21.1 3.4
   Role function 45.0 45.0 9.0 Ocular pain 18.5 18.3 3.7
   Social function 28.6 31.8 6.0 Near activities 19.2 22.2 4.0
   Cognitive function 24.2 25.1 4.9 Distance activities 16.6 19.7 3.5
   Pain 27.0 28.3 5.5 Social functioning 14.3 17.9 3.0
   Mental health 14.7 16.2 3.1 Mental health 19.4 21.5 4.0
   Energy 22.1 24.8 4.6 Role difficulties 24.9 26.7 5.1
   Quality of life 21.0 22.9 4.4 Dependency 18.1 20.9 3.7
   Health transitions 23.8 24.4 4.8 Driving 20.9 31.5 4.7
Health utility     Color vision 12.9 17.4 2.8
   Feeling thermometer 19.2 21.0 4.0 Peripheral vision 21.3 24.2 4.4
   EQ-5D 0.17 0.19 0.036