Items Measurement of Agreement (Kappa) 1A 0.86 1B 0.94 1C 0.84 1D 0.86 1E 0.93 1F 0.84 2A 0.90 2B 0.86 2C 0.93 2D 0.88 2E 0.85 3 0.86 4 0.96 5 0.87 6 0.98 7 0.88 8 0.96 9 0.86 10A 0.86 10B 0.98 10C 0.98 10D 0.86 10E 0.95 10F 0.98 10G 0.83

Table 3: Construct validity as assessed by measurement of agreement between subjects response during cognitive interview and completing the questionnaire by self.