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Table 3 Agreement scores of patient reported outcome measures

From: Interpreter proxy versus healthcare interpreter for administration of patient surveys following arthroplasty: a pilot study

 kappaICC (95% CI)CCC (95% CI)MD95% Limits of AgreementWilcoxon p-value
EQ-5D
 Mobility0.810.82 (0.73-0.88)0.81 (0.73 - 0.87)-0.02-0.93 to 0.880.66
 Personal care0.660.66 (0.52-0.77)0.66 (0.52 - 0.76)0.02-1.11 to 1.150.84
 Usual Activities0.680.68 (0.54-0.78)0.68 (0.54-0.77)0.11-0.99 to 1.20.09
 Pain/Discomfort0.690.69 (0.56-0.79)0.69 (0.56-0.79)-0.02-1.07 to 1.020.70
 Anxiety/Depression0.570.57 (0.41-0.7)0.57 (0.41-0.69)0.06-1.05 to 1.160.38
EQ-VAS-0.78 (0.68-0.85)0.78 (0.68 - 0.85)0.72-22.7 to 24.10.79
Oxford scores0.870.87 (0.8-0.91)0.86 (0.8-0.91)0.13-6.46 to 6.720.79
Satisfaction0.75--0.01-0.86
Success0.70---0.02-0.71
Re-admission1.00-----
Re-operation1.00-----
Complications0.69-----
  1. Proxy: Interpreter proxy (family or carer)
  2. HC Int: Certified healthcare interpreter
  3. Kappa: Quadratic Weighted Cohen’s Kappa
  4. ICC: Intraclass correlation
  5. CCC: Concordance correlation coefficient
  6. MD: Mean difference between the two measurements (Proxy score minus HC Int score)
  7. 95% Limits of Agreement: MD ± 1.96 SD of the MD
  8. Score Range for EQ5D: 1-5 for each domain, EQ- VAS: 0-100, Oxford Score: 0-48, Satisfaction: 1-5, Success: 1-5