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Table 3 Mean Absolute Difference between Patient and Proxy Responses for pSF-12 Physical Component Score(PCS), pUI scale, and FES Scores

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

   pSF-12 PCS pUI scale FES
Questions   N mean absolute difference (P value) N mean absolute difference (P value) N mean absolute difference (P value)
Relationship of proxy to patient Husband 16 5.4   12 11.9   10 5.4  
  Wife 7 9.8   2 4.3   6 5.3  
  Son 4 5.8   2 30.2   4 0.9  
  Daughter 11 4.8   5 5.3   8 8.7  
  Others+ 5 7.0 (0.32) 3 24.7 (0.16)* 4 9.8 (0.14)*
Proxy's gender Male 21 5.7   14 14.5   15 4.1  
  Female 22 6.2 (0.52) 10 10.9 (0.52) 17 8.0 (0.06)*
Proxy's educational level Professional 7 7.0   4 10.7   4 8.0  
  College 14 5.5   8 16.6   13 7.4  
  Vocational 14 6.0   7 15.2   10 4.4  
  High School 7 7.2 (0.87) 4 7.6 (0.70) 5 5.2 (0.60)
Proxy lives with patient? Yes 35 6.6   21 11.5   25 4.8  
  No 8 4.4 (0.28) 3 24.0 (0.12) 7 11.0 (0.05)*
How often proxy accompanies patient to MD visit? Always 17 7.5   11 13.9   13 5.7  
  Usually 7 7.2   3 10.1   5 5.0  
  Sometimes 13 4.4   6 14.7   11 7.5  
  Never 5 5.0 (0.40) 3 13.8 (0.97) 3 5.7 (0.85)
Days per week proxy sees patient? 7 days 29 5.9   17 13.1   20 4.3  
  <7 days 9 4.7 (0.51) 3 24.0 (0.21) 8 10.1 (0.05)*
  No answer 4 11.5   3 6.0   4 7.6  
How well proxy knows about patient's health? Very well 29 6.5   15 11.1   21 7.7  
  Pretty well 10 6.1   6 15.3   9 3.8  
  Somewhat 3 3.2 (0.59) 2 27.0 (0.26) 2 1.2 (0.08)*
Is proxy familiar with patient's meds? Yes 36 6.3   19 13.9   27 6.6  
  No 3 4.1   2 3.6   3 1.0  
  Not sure 2 7.9   1 36.6   2 8.5  
  Not Taking 1 4.0 (0.83) 1 4.4 (0.19) 0   (0.25)
How well proxy knows about patient's activity? Very well 36 6.2   22 14.0   27 6.7  
  Pretty well 5 5.3   1 5.0   4 4.0  
  Somewhat 1 11.2 (0.59) 0   (0.52) 1 1.0 (0.48)
How well proxy knows about patient's mood? Very well 24 6.3   11 13.0   18 7.4  
  Pretty well 16 6.3   12 14.1   12 4.7  
  Somewhat 2 3.8 (0.81) 0   (0.84) 2 4.0 (0.42)
  1. Note: Information on relationship to patient, gender and whether or not proxy lives with patient was available from patients, thus, includes a person who did not respond to the mail survey.
  2. * P value derived from Kruskal-Wallis test because test for equal variance did not hold.
  3. + Others included roommate fiancé, niece, and sister.