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Table 5 Linear regression model of year-4 mental component score among females (n = 1392)

From: The effect of subjective social status on health-related quality of life decline in urban Chinese older adults: a four-year longitudinal study from Hong Kong

 

Bivariable model (MCS baseline)

SSS-Society model

SSS-Community model

Factors

B Coeff (95% CI)

p-value

B Coeff (95% CI)

Std. Coeff

p-value

B Coeff (95% CI)

Std. Coeff

p-value

SSS-Society

0.51 (0.27, 0.75)

< 0.001

0.53 (0.29, 0.78)

0.12

< 0.001

–

–

–

SSS-Community

0.61 (0.40, 0.81)

< 0.001

–

–

–

0.58 (0.37, 0.78)

0.14

< 0.001

Baseline MCS

0.35 (0.29, 0.41)

< 0.001

0.32 (0.26, 0.38)

0.28

< 0.001

0.32 (0.26, 0.37)

0.28

< 0.001

Demographics

 Age

0.03 (− 0.06, 0.11)

0.527

–

–

–

–

–

–

 Education

 

0.995

  

0.970

  

0.897

  No schooling

1.00

 

1.00

  

1.00

  

  At least some primary school

−0.08 (−1.06, 0.90)

 

−0.09 (−1.09, 0.90)

− 0.01

 

0.20 (− 0.77, 1.16)

0.01

 

  At least some secondary school

0.04 (−1.36, 1.45)

 

−0.11 (−1.56, 1.35)

− 0.00

 

0.40 (− 0.99, 1.79)

0.02

 

  At least some university/ college

0.08 (−1.69, 1.85)

 

−0.46 (− 2.29, 1.37)

− 0.01

 

0.59 (− 1.17, 2.34)

0.02

 

 Currently married

1.21 (0.36, 2.06)

0.005

1.39 (0.51, 2.27)

0.08

0.002

1.30 (0.45, 2.15)

0.08

0.003

Well-being factors

 PASE Score (IQR)

0.57 (−0.42, 1.56)

0.257

–

–

–

–

–

–

 Currently living alone

1.42 (0.34, 2.49)

0.010

0.70 (− 0.59, 2.00)

0.03

0.287

0.80 (− 0.44, 2.03)

0.04

0.208

Medical history

 Diabetes

0.82 (−0.44, 2.07)

0.201

–

–

–

–

–

–

 Hyperthyroidism

−2.87 (− 4.82, − 0.91)

0.004

−1.62 (−3.70, 0.47)

−0.04

0.129

−1.41 (−3.45, 0.63)

− 0.04

0.174

 Hypothyroidism

−3.00 (−5.74, − 0.26)

0.032

−3.00 (− 5.76, − 0.25)

−0.06

0.032

−2.77 (− 5.45, − 0.09)

−0.05

0.043

 Osteoporosis

−0.66 (− 2.18, 0.85)

0.392

–

–

–

–

–

–

 History of stroke

−4.48 (−6.86, − 2.11)

< 0.001

−3.24 (− 5.68, − 0.79)

−0.07

0.010

−4.19 (− 6.52, − 1.85)

−0.09

< 0.001

 Hypertension

0.06 (−0.79, 0.91)

0.893

–

–

–

–

–

–

 CVD conditions

−1.63 (− 2.76, − 0.49)

0.005

−1.48 (− 2.62, − 0.34)

− 0.07

0.011

−1.30 (− 2.41, − 0.18)

−0.06

0.023

 COPD

−1.08 (− 3.07, 0.91)

0.287

–

–

–

–

–

–

 Current alcohol use

1.48 (− 1.08, 4.04)

0.258

–

–

–

–

–

–

 Ever smoked

−0.30 (− 1.81, 1..20)

0.691

–

–

–

–

–

–

 History of starvation

−0.89 (− 1.76, − 0.03)

0.043

−0.75 (−1.65, 0.15)

0.05

0.102

−0.62 (−1.49, 0.26)

−0.04

0.166

 BMI > = 30

1.96 (−0.33, 4.25)

0.094

1.70 (−0.61, 4.02)

0.04

0.149

1.24 (−1.05, 3.53)

0.03

0.288

 Walking speed (m/sec)

0.58 (−1.51, 2.67)

0.588

–

–

–

–

–

–

  1. SSS Subjective social status, MCS Mental Component Score, PASE Physical Activity Scale for Elderly, IQR Interquartile range, CVD Cardiovascular diseases, COPD Chronic obstructive pulmonary disease, BMI Body mass index. Values in bold represent those variables retained in the final model. Values not bolded but shown in the final model column represent their value before being removed from the model
  2. SSS-Society model: VIF range 1.006 to 1.366, R square 0.122
  3. SSS-Community model: VIF range 1.005 to 1.358, R square 0.132
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BMC Geriatrics

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