Table 8: SF-36 Physical health scale Rasch analysis Infit and Outfit statistics for six waves of data collection.

Wave 1 Wave 2 Wave 3
SF36 ITEM InfitOutfitInfitOutfitInfitOutfit
MNSQZSTDMNSQZSTDMNSQZSTDMNSQZSTDMNSQZSTDMNSQZSTD

1:Q11.249.91.309.91.249.91.299.91.169.91.209.9
3:Q3A0.93-4.60.90-6.30.97-1.80.90-6.20.93-3.70.85-7.6
4:Q3B0.57-9.90.59-9.90.59-9.90.60-9.90.64-9.90.65-9.9
5:Q3C0.53-9.90.54-9.90.53-9.90.54-9.90.54-9.90.56-9.9
6:Q3D0.72-9.90.73-9.90.71-9.90.71-9.90.72-9.90.71-9.9
7:Q3E0.44-9.90.46-9.90.45-9.90.47-9.90.48-9.90.50-9.9
8:Q3F0.62-9.90.63-9.90.64-9.90.64-9.90.67-9.90.67-9.9
9:Q3G0.71-9.90.72-9.90.73-9.90.75-9.90.81-9.90.81-9.9
10:Q3H0.45-9.90.49-9.90.50-9.90.53-9.90.59-9.90.62-9.9
11:Q3I0.28-9.90.32-9.90.30-9.90.33-9.90.36-9.90.39-9.9
12:Q3J0.21-9.90.23-9.90.18-9.90.19-9.90.21-9.90.23-9.9
13:Q4A0.36-9.90.40-9.90.37-9.90.40-9.90.44-9.90.48-9.9
14:Q4B0.51-9.90.53-9.90.53-9.90.54-9.90.59-9.90.60-9.9
15:Q4C0.44-9.90.47-9.90.43-9.90.45-9.90.49-9.90.52-9.9
16:Q4D0.46-9.90.49-9.90.46-9.90.48-9.90.52-9.90.55-9.9
21:Q72.339.92.409.92.519.92.779.92.209.92.239.9
22:Q82.299.92.399.92.669.92.729.92.239.92.299.9
33:Q11A1.249.91.209.91.107.11.063.91.127.21.084.4
34:Q11B2.189.92.209.92.079.92.099.91.889.91.899.9
35:Q11C1.259.91.269.91.169.91.179.91.179.91.189.9
36:Q11D2.219.92.289.92.369.92.419.92.129.92.159.9

Wave 4 Wave 5Wave 6
SF36 ITEM InfitOutfitInfitOutfitInfitOutfit
MNSQZSTDMNSQZSTDMNSQZSTDMNSQZSTDMNSQZSTDMNSQZSTD

1:Q11.021.41.042.90.99-0.81.000.00.92-4.10.93-3.4
3:Q3A0.98-0.90.87-5.21.041.50.92-2.81.123.10.95-1.1
4:Q3B0.67-9.90.67-9.90.69-9.90.69-9.90.76-9.90.74-9.9
5:Q3C0.56-9.90.57-9.90.57-9.90.58-9.90.62-9.90.63-9.9
6:Q3D0.72-9.90.71-9.90.76-9.90.73-9.90.80-8.20.74-9.9
7:Q3E0.49-9.90.51-9.90.53-9.90.55-9.90.59-9.90.60-9.9
8:Q3F0.63-9.90.64-9.90.62-9.90.62-9.90.65-9.90.66-9.9
9:Q3G0.83-9.90.81-9.90.86-7.00.83-8.80.90-3.90.83-6.7
10:Q3H0.66-9.90.68-9.90.72-9.90.73-9.90.79-9.40.79-9.5
11:Q3I0.39-9.90.42-9.90.46-9.90.48-9.90.50-9.90.53-9.9
12:Q3J0.28-9.90.30-9.90.33-9.90.35-9.90.37-9.90.40-9.9
13:Q4A0.47-9.90.51-9.90.53-9.90.58-9.90.55-9.90.59-9.9
14:Q4B0.62-9.90.63-9.90.65-9.90.66-9.90.68-9.90.69-9.9
15:Q4C0.54-9.90.57-9.90.59-9.90.61-9.90.63-9.90.65-9.9
16:Q4D0.56-9.90.59-9.90.60-9.90.62-9.90.63-9.90.65-9.9
21:Q72.089.92.099.91.969.91.969.91.799.91.799.9
22:Q82.079.92.119.91.959.91.979.91.859.91.869.9
33:Q11A1.137.21.115.61.136.31.115.11.187.21.207.5
34:Q11B1.859.91.869.91.699.91.699.91.629.91.599.9
35:Q11C1.189.91.199.91.158.01.168.41.135.91.136.1
36:Q11D2.059.92.099.91.959.91.969.91.839.91.829.9

Notes. MNSQ = mean square residual fit statistic; ZSTD: standardized mean square residual fit statistic; values in italic for Infit or Outfit MnSq > 1.34; values underlined for Infit or Outfit MnSq < 0.64.