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Table 4 Health-related quality of life, work productivity, and resource use by annual gout flares (unadjusted)

From: Tophi and frequent gout flares are associated with impairments to quality of life, productivity, and increased healthcare resource use: Results from a cross-sectional survey

  Number of self-reported flares in past 12 months
0/don't recall (n = 151) 1 to 2 (n = 235) 3 (n = 91) 4 to 5 (n = 86) 6+ (n = 57)  
M SD M SD M SD M SD M SD p
HRQOL
  SF-12 MCS 49.91 9.67 49.23 10.30 47.85 10.03 44.66 13.03 44.46 13.43 <0.0001
  SF-12 PCS 43.25 11.61 42.72 12.27 38.16 11.85 37.04 11.40 33.49 9.99 <0.0001
  SF-6D Utility 0.73 0.12 0.72 0.14 0.67 0.15 0.64 0.17 0.61 0.13 <0.0001
Work Productivity
  % Work missed (n = 234) 6.76 23.15 5.16 16.23 4.66 17.42 1.85 5.11 8.71 14.99 0.661
  % Impairment at work (n = 229) 14.12 18.35 21.22 26.72 21.62 27.84 19.26 26.01 33.33 30.60 0.056
  % Overall work impairment (n = 234) 19.80 26.90 23.23 29.80 24.29 30.42 19.93 26.70 36.58 33.32 0.197
  % Activity impairment 28.68 28.42 36.77 33.39 43.41 34.42 45.58 34.39 54.21 30.29 <0.0001
Resource Use
  Number of traditional healthcare provider visits 6.91 8.45 5.68 6.01 8.29 10.09 8.02 8.76 7.40 6.79 0.032
  1. Note: All n = 620 unless otherwise noted. MCS: Mental Component Summary; PCS: Physical Component Summary; ER: Emergency Room.