Characteristic | Model 1:no interaction | Model 2:Income × contracting status | Model 3:Educational attainment × contracting status | ||||||
---|---|---|---|---|---|---|---|---|---|
P-value | Coefficient | 95%CI | P-value | Coefficient | 95%CI | P-value | Coefficient | 95%CI | |
Contracting status | |||||||||
 No |  | Ref |  |  | Ref |  |  | Ref |  |
 Yes | 0.013 | 0.042 | (0.008,0.075) | 0.543 | -0.020 | (-0.083,0.044) | 0.002 | 0.171 | (0.064,0.277) |
Household income a | |||||||||
 Q1 |  | Ref |  |  | Ref |  |  | Ref |  |
 Q2 | 0.796 | 0.005 | (-0.036,0.047) | 0.632 | 0.011 | (-0.036,0.058) | 0.762 | 0.006 | (-0.035,0.047) |
 Q3 | 0.636 | 0.010 | (-0.032,0.052) | 0.714 | 0.009 | (-0.039,0.057) | 0.617 | 0.011 | (-0.031,0.053) |
 Q4 | 0.005 | 0.062 | (0.018,0.105) | 0.000 | 0.090 | (0.039,0.140) | 0.005 | 0.063 | (0.019,0.106) |
Educational attainment | |||||||||
 Primary education or below |  | Ref |  |  | Ref |  |  | Ref |  |
 Junior education | 0.001 | 0.064 | (0.026,0.102) | 0.001 | 0.064 | (0.026,0.102) | 0.002 | 0.073 | (0.028,0.117) |
 Senior education or above | 0.007 | 0.079 | (0.021,0.1) | 0.006 | 0.080 | (0.023,0.138) | 0.461 | 0.027 | (-0.044,0.098) |
Gender | |||||||||
 Male |  | Ref |  |  | Ref |  |  | Ref |  |
 Female | 0.017 | -0.054 | (-0.097,-0.010) | 0.023 | -0.050 | (-0.095,0.007) | 0.014 | -0.055 | (-0.985,-0.011) |
Age | |||||||||
  < 50 |  | Ref |  |  | Ref |  |  | Ref |  |
 50–59 | 0.175 | -0.041 | (-0.100,0.018) | 0.171 | -0.041 | (-0.100,0.178) | 0.236 | -0.036 | (-0.095,0.023) |
 60–69 | 0.071 | -0.054 | (-0.011,0.005) | 0.065 | -0.055 | (-0.114,0.003) | 0.092 | -0.050 | (-0.109,0.008) |
  ≥ 70 | 0.507 | -0.023 | (-0.090,0.044) | 0.470 | -0.025 | (-0.091,0.042) | 0.595 | -0.018 | (-0.085,0.049) |
Multiple chronic diseases | |||||||||
 No |  | Ref |  |  | Ref |  |  | Ref |  |
 Yes | 0.000 | -0.067 | (-0.099,-0.035) | 0.000 | -0.068 | (-0.100,-0.036) | 0.000 | -0.069 | (-0.101,-0.036) |
Employment status | |||||||||
 Unemployed |  | Ref |  |  | Ref |  |  | Ref |  |
 Employed | 0.000 | 0.095 | (0.061,0.129) | 0.000 | 0.095 | (0.060,0.129) | 0.000 | 0.096 | (0.062,0.131) |
Drinking status | |||||||||
 Never drinkers |  | Ref |  |  | Ref |  |  | Ref |  |
 Former drinkers | 0.118 | -0.043 | (-0.097,0.011) | 0.135 | -0.041 | (-0.095,0.013) | 0.116 | -0.043 | (-0.097,0.011) |
 Current drinkers | 0.299 | 0.025 | (-0.022,0.073) | 0.271 | 0.027 | (-0.021,0.074) | 0.269 | 0.026 | (-0.021,0.074) |
Physical exercise | |||||||||
 No |  | Ref |  |  | Ref |  |  | Ref |  |
 Yes | 0.000 | -0.057 | (-0.087,-0.027) | 0.000 | -0.057 | (-0.087,-0.027) | 0.000 | -0.057 | (-0.087,-0.027) |
Marital status | |||||||||
 Single |  | Ref |  |  | Ref |  |  | Ref |  |
 Married | 0.259 | 0.077 | (-0.057,0.211) | 0.257 | 0.077 | (-0.056,0.211) | 0.270 | 0.075 | (-0.058,0.209) |
 Others b | 0.591 | 0.036 | (-0.100,0.170) | 0.570 | 0.038 | (-0.094,0.171) | 0.579 | 0.037 | (-0.095,0.170) |
Family members | |||||||||
 1 |  | Ref |  |  | Ref |  |  | Ref | Ref |
 2 | 0.623 | -0.017 | (-0.011,0.069) | 0.633 | -0.016 | (-0.083,0.051) | 0.755 | -0.012 | (-0.079,0.055) |
 3 | 0.966 | 0.002 | (-0.013,0.072) | 0.959 | 0.002 | (-0.072,0.076) | 0.897 | 0.005 | (-0.069,0.079) |
  ≥ 4 | 0.377 | 0.031 |  | 0.360 | 0.032 | (-0.036,0.998) | 0.349 | 0.033 | (-0.036,0.101) |
Income × contracting status | |||||||||
 Q1 × contracted |  |  |  | 0.042 | 0.095 | (0.004,0.187) |  |  |  |
 Q2 × contracted |  |  |  | 0.156 | 0.066 | (-0.025,0.157) |  |  |  |
 Q3 × contracted |  |  |  | 0.052 | 0.088 | (-0.001,0.177) |  |  |  |
Educational attainment × contracting status | |||||||||
 Primary education or below × contracted |  |  |  |  |  | 0.020 | -0.135 | (-0.249,-0.022) | |
 Junior education × contracted |  |  |  |  |  |  | 0.011 | -0.161 | (-0.286,-0.038) |