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Table 3 Principal component analysis of functioning variables by two methods. Varimax rotation. All factor loadings are shown, those greater than 0.40 are typed in bold

From: Socio-demographic factors and self-reported funtional status: the significance of social support

I. First method (raw variables)

Questions on functioning

Index 1 (SORM)

Index 2 (SCR)

 

Communality

Q1. Work and /or housework

0.906

0.200

 

0.860

Q2. Social contacts

0.873

0.277

 

0.838

Q3. Mobility

0.749

0.391

 

0.803

Q4. Dressing

0.348

0.917

 

0.871

Q5. Eating

0.221

0.866

 

0.888

% of total variance explained

68.7

16.4

  

II. Second method (binary variables)

Questions on functioning

Index 1 (SL)

Index 2 (MSCR)

Index 3 (MSORM)

Communality

Q1. Work and/or housework a

0.604

0.393

0.079

0.614

Q2. Social contacts a

0.709

0.368

-0.126

0.737

Q3. Mobility a

0.716

0.329

-0.144

0.717

Q4. Dressing a

0.856

-0.056

0.002

0.735

Q5. Eating a

0.784

-0.215

0.052

0.663

Q1. Work and/or housework b

-0.007

-0.078

0.754

0.580

Q2. Social contacts b

0.014

0.139

0.839

0.723

Q3. Mobility b

0.017

0.283

0.765

0.665

Q4. Dressing b

0.012

0.853

0.162

0.755

Q5. Eating b

0.064

0.792

0.139

0.650

% of total variance explained

33.1

22.2

13.2

 
  1. a. 1 = serious limitation, 0 = otherwise b. 1 = minor limitation, 0 = otherwise