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Table 2 Linear regression model of year-4 physical component score among males (n = 1542)

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 (PCS 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

0.11 (− 0.08, 0.31)

0.260

0.09 (− 0.11, 0.29)

0.02

0.389

–

–

–

SSS-Community

0.23 (0.07, 0.40)

0.006

–

–

–

0.24 (0.07, 0.40)

0.07

0.005

Baseline PCS

0.42 (0.37, 0.47)

< 0.001

0.38 (0.33, 0.43)

0.35

< 0.001

0.37 (0.32, 0.42)

0.35

< 0.001

Demographics

 Age

−0.12 (− 0.19, − 0.04)

0.002

− 0.03 (− 0.11, 0.05)

−0.02

0.442

−0.04 (− 0.12, 0.04)

−0.02

0.326

 Education

 

0.098

  

0.508

  

0.523

  No schooling

1.00

 

1.00

  

1.00

  

  At least some primary school

0.53 (− 1.16, 2.22)

 

0.22 (− 1.45, 1.90)

0.02

 

0.08 (− 1.60, 1.76)

0.01

 

  At least some secondary school

1.42 (−0.33, 3.18)

 

0.84 (− 0.91, 2.58)

0.05

 

0.69 (− 1.06, 2.44)

0.04

 

  At least some university/ college

1.28 (−0.58, 3.14)

 

0.44 (− 1.44, 2.31)

0.02

 

0.21 (−1.66, 2.08)

0.01

 

  Currently married

−0.73 (− 1.89, 0.44)

0.220

–

–

–

–

–

–

Well-being factors

 PASE Score (<IQR)

− 1.49 (− 2.30, − 0.69)

< 0.001

− 1.17 (− 1.98, − 0.36)

−0.07

0.005

− 1.23 (− 2.04, − 0.43)

−0.07

0.003

 Currently living alone

−0.49 (− 1.95, 0.98)

0.514

–

–

–

–

–

–

Medical history

 Diabetes

−0.51 (− 1.53, 0.51)

0.325

–

–

–

–

–

–

 Hyperthyroidism

−2.35 (− 5.25, 0.56)

0.114

− 2.15 (− 5.03, 0.72)

−0.03

0.142

− 2.12 (− 4.99, 0.75)

− 0.03

0.147

 Hypothyroidism

1.07 (− 2.94, 5.08)

0.601

–

–

–

–

–

–

Osteoporosis

0.70 (− 1.42, 2.83)

0.516

–

–

–

–

–

–

 History of stroke

− 1.58 (− 3.29, 0.13)

0.070

−0.48 (− 2.19, 1.23)

−0.01

0.584

−0.60 (− 2.31, 1.10)

−0.02

0.488

 Hypertension

− 1.37 (− 2.08, − 0.66)

< 0.001

−1.15 (− 1.86, − 0.44)

−0.07

0.002

−1.14 (− 1.85, − 0.43)

−0.07

0.002

 CVD conditions

−0.66 (− 1.59, 0.27)

0.161

− 0.19 (− 1.12, 0.75)

−0.01

0.697

−0.18 (− 1.11, 0.75)

−0.01

0.701

 COPD

−0.97 -2.16, 0.21)

0.108

−0.75 (− 1.92, 0.42)

− 0.03

0.211

− 0.78 (− 1.95, 0.39)

−0.03

0.190

 Current alcohol use

0.57 (−0.26, 1.38)

0.177

0.14 (− 0.68, 0.96)

0.01

0.734

0.17 (−0.65, 0.99)

0.01

0.688

 Ever smoked

−0.00 (− 0.73, 0.73)

0.996

–

–

–

–

–

–

 History of starvation

−0.15 (− 0.89, 0.59)

0.692

–

–

–

–

–

–

 BMI > = 30

−0.01 (− 2.48, 2.47)

0.995

–

–

–

–

–

–

 Walking speed (m/sec)

5.55 (3.94, 7.17)

< 0.001

4.86 (3.18, 6.55)

0.14

< 0.001

4.72 (3.06, 6.39)

0.14

< 0.001

  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: VIF range 1.015 to 1.116, R square 0.187
  3. SSS-Community: VIF range 1.016 to 1.115, R square 0.190