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Table 4 Multivariate analysis – parameter estimates for the domain/facet of WHOQOL-BREF and WHOQOL-OLD with the highest R2

From: Multivariate analysis of independent determinants of ADL/IADL and quality of life in the elderly

Variable

Physical Health (WHOQOL-BREF)

Social Participation (WHOQOL-OLD)

β

(95% CI)

p value

β

(95% CI)

p value

Intercept

65.84

(52.95–78.74)

<  0.0001* 1

59.27

(47.75–72.93)

<  0.0001* 1

Age (continuous)

–

–

–

–

Women

−1.80

(−2.70 - -0.88)

0.0001* 1

–

–

ADL disabled

−3.29

(−4.39 - -2.20)

<  0.0001* 1

− 3.55

(− 4.70 - -2.40)

<  0.0001* 1

IADL disabled

− 4.09

(− 5.09 - -3.09)

<  0.0001* 1

− 3.97

(− 5.02 - -2.92)

<  0.0001* 1

Living Situation

–

–

–

–

Rural-Urban

–

–

–

–

Education

Intermediate

–

–

–

–

Income (subjective)

    

Appropriate

1.51

(0.42–2.59)

0.0065* 1

1.49

(0.36–2.63)

0.0101* 1

Social Support (available)

−1.24

(−2.36 - -0.12)

0.0296* 1

–

–

Social Participation

(no shortage)

3.73

(2.85–4.60)

<  0.0001* 1

4.45

(3.53–5.36)

<  0.0001* 1

MNA

–

–

  

<  17

  

−9.72

(−15.52 - -3.92)

0.0010* 1

≥ 24

  

6.62

(3.52–9.72)

<  0.0001* 1

DemTect

<  9

–

–

–

–

Timed Up-and-Go

Better than age-specific

cut-off value

5.44

(4.54–6.34)

<  0.0001* 1

3.53

(2.59–4.47)

<  0.0001* 1

  1. 1 Two-sided t-tests based on mean least squares regression, p < 0.05. The R2 of the regression model was 0.38 for ‘Physical Health’ (WHOQOL-BREF) and 0.32 for ‘Social Participation’ (WHOQOL-OLD)