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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