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Table 3 R2 or the amount of variance the single independent variables and the total variance the corresponding 14 models account for and number of ICF categories resulting from each of the different steps of the selection of ICF categories.

From: Identification of candidate categories of the International Classification of Functioning Disability and Health (ICF) for a Generic ICF Core Setbased on regression modelling

Item 1 of the SF-36 Initial Model Model II b140 instead b130 & b164 Model III b152 instead b130 Model IV b144 instead b130 & b164 Model V d450 & d920 instead d640 Model VI d475 & d920 instead d640 Model VII d470 & d920 instead d640 Model VIII d450 & d850 instead d640 Model IX d475 & d850 instead d640 Model X d470 & d850 instead d450 Model XI d540 & d920 instead d640 Model XII d620 instead d640 Model XIII d630 instead d640 Model XIV d660 instead d640
Age 0.0345 0.0346 0.0346 0.0346 0.0351 0.035 0.0353 0.0352 0.0302 0.0351 0.0351 0.0346 0.0344 0.0346
Gender               
Comorbidities (N)               
b130 Energy and drive functions 0.0498     0.0449 0.0445 0.046 0.0479 0.0437 0.0456 0.0449 0.0166 0.0497 0.0449
b152 Emotional Functions    0.0125            
b235 Vestibular functions            0.0065    
b280 Sensation of pain 0.1073 0.1142 0.1157 0.1119 0.1177 0.1172 0.1169 0.1117 0.1096 0.1113 0.1135 0.1082 0.1086 0.1143
b730 Muscle power functions            0.0043    
d450 Walking      0.019    0.0184       
D620 Acquisition of goods and services             0.0470   
d640 Doing housework 0.0191 0.0507 0.0512 0.0561           
d660 Assisting others               0.0065
d850 Remunerative employment          0.0110 0.0104     
d920 Recreation & Leisure       0.0143         
e450 Individual attitudes of health professionals              0.0060  
e580 Health services, systems and policies               0.0051
Breast cancer 0.0123 0.0128 0.0133 0.0131 0.0078 0.01 0.0134 0.0081 0.0141 0.0140 0.0139 0.0134 0.0138 0.0139
Osteoporosis 0.0095 0.0117 0.0114 0.0117 0.0075 0.0089 0.0097 0.0075 0.0141 0.0085 0.0094 0.0109 0.0116 0.0121
Chronic widespread pain     0.0039           
Depressive disorder   0.0088   0.0086           
Diabetes Mellitus        0.0051       0.0058  
Total R2 0.2325 0.2328 0.2387 0.2399 0.232 0.2299 0.2264 0.2288 0.2227 0.2249 0.2276 0.2307 0.2299 0.2314