Skip to main content

Table 1 Item Descriptor, Number of Patient-Proxy Pairs and Intraclass-Correlation Coefficients of Individual Items in the pSF-12p, pUI Scale, and FES

From: Do proxies reflect patients' health concerns about urinary incontinence and gait problems?

Item descriptor N ICC* %Bias†
pSF-12 PCS Items    
   Self-report health (poor/fair/good/very good/excellent) 41 0.38 8.5%
   Limitation in vigorous activities? 43 0.27 3.5%
   Limitation moderate activities? 42 0.54 9.5%
   Limitation in climbing several flights of stairs 43 0.39 8.1%
   Limitation in dressing/bathing yourself 43 0.08 9.3%
   Limited kind of activities/work 43 0.09 -16.3%
pUI Scale Items    
   Worry about getting to the toilet on time 24 0.64 -8.3%
   Have to be careful about sitting/standing 23 0.60 -1.1%
   Worry where the toilets are in new places 24 0.51 0.0%
   Don't feel free to leave home 24 0.14 -3.1%
   Worry about others smelling urine on me 24 0.39 -9.4%
   Frequent trip to toilet is important 24 0.43 -5.2%
   Plan details in advance 24 0.29 -8.3%
   Hard to get good sleep 24 0.63 -4.2%
   Watch what/how much to drink 24 0.07 -4.2%
   Limited choice of clothing 22 -0.10 1.1%
FES Items    
   Cleaning the house 32 0.10 17.7%
   Getting dressed 32 0.23 9.4%
   Preparing simple meals 32 0.38 -3.1%
   Taking a bath/shower 32 0.26 3.1%
   Simple shopping 30 0.10 15.6%
   Getting in and out of a chair 32 0.23 6.3%
   Going up/down stairs 32 0.02 24.0%
   Walking around the neighborhood 32 0.10 18.8%
   Reaching into cabinets or closets 32 0.19 0.0%
   Going to answer the telephone 32 0.09 8.3%
  1. * Intraclass correlation
  2. † * Mean proxy answers compared to patient answers on the item expressed as the percentage of the full scale points. Negative values indicate proxies indicated worse health on pSF and less concerned on FES and pUI.
  3. ‡ For proxy interview, the pUI and FES items were modified to address proxy's concerns about patient UI and fear of patient falling