Table 3.
Subgroup analysis of the associations between different classes and dual sensory impairment.
| Characteristics | Case | Class 1 | Class 2 | Class 3 | Class 4 | Class 5 | P for interaction |
|---|---|---|---|---|---|---|---|
| Age (years) | 0.145 | ||||||
| Q1 (45–51) | 1,052 | Ref | 1.42 (1.02, 1.97) 0.038 | 1.96 (1.21, 3.18) 0.007 | 1.43 (0.97, 2.10) 0.073 | 1.15 (0.59, 2.23) 0.682 | |
| Q2 (52–60) | 1,092 | Ref | 1.63 (1.19, 2.24) 0.003 | 1.23 (0.74, 2.05) 0.420 | 1.90 (1.27, 2.84) 0.002 | 3.45 (1.90, 6.27) <0.001 | |
| Q3 (61–90) | 1,093 | Ref | 1.47 (1.07, 2.01) 0.017 | 1.42 (0.91, 2.21) 0.119 | 1.38 (0.96, 1.99) 0.087 | 1.30 (0.75, 2.27) 0.346 | |
| Gender | 0.530 | ||||||
| Male | 1,675 | Ref | 1.58 (1.23, 2.03) <0.001 | 1.84 (1.22, 2.78) 0.004 | 1.66 (1.21, 2.27) 0.002 | 1.25 (0.64, 2.43) 0.514 | |
| Female | 1,562 | Ref | 1.39 (1.05, 1.83) 0.020 | 1.30 (0.90, 1.87) 0.162 | 1.44 (1.05, 1.97) 0.022 | 1.76 (1.17, 2.64) 0.007 | |
| Education level | 0.359 | ||||||
| Primary school or lower | 1,849 | Ref | 1.37 (1.07, 1.76) 0.011 | 1.31 (0.94, 1.83) 0.114 | 1.31 (0.99, 1.74) 0.057 | 1.53 (1.04, 2.25) 0.033 | |
| Secondary school or higher | 1,388 | Ref | 1.67 (1.26, 2.20) <0.001 | 1.85 (1.16, 2.94) 0.009 | 2.05 (1.43, 2.93) <0.001 | 1.84 (0.89, 3.80) 0.101 | |
| Current married | 0.745 | ||||||
| No | 316 | Ref | 1.62 (0.83, 3.16) 0.159 | 2.24 (1.02, 4.93) 0.045 | 1.52 (0.71, 3.27) 0.286 | 1.41 (0.56, 3.57) 0.463 | |
| Yes | 2,921 | Ref | 1.48 (1.22, 1.79) <0.001 | 1.42 (1.06, 1.90) 0.020 | 1.54 (1.22, 1.94) <0.001 | 1.72 (1.19, 2.49) 0.004 | |
| Hukou | 0.014 | ||||||
| Agriculture | 2,433 | Ref | 1.34 (1.09, 1.65) 0.006 | 1.46 (1.08, 1.96) 0.013 | 1.36 (1.06, 1.75) 0.015 | 1.84 (1.28, 2.64) 0.001 | |
| Others | 804 | Ref | 2.11 (1.44, 3.09) <0.001 | 1.69 (0.86, 3.33) 0.131 | 2.45 (1.52, 3.95) <0.001 | 0.65 (0.21, 2.02) 0.457 | |
| Smoking status | 0.477 | ||||||
| No | 2,367 | Ref | 1.47 (1.19, 1.83) <0.001 | 1.41 (1.03, 1.94) 0.032 | 1.51 (1.17, 1.94) 0.002 | 1.83 (1.26, 2.64) 0.001 | |
| Yes | 870 | Ref | 1.53 (1.08, 2.18) 0.018 | 1.92 (1.13, 3.26) 0.015 | 1.66 (1.06, 2.60) 0.027 | 0.91 (0.36, 2.28) 0.834 | |
| Drinking status | 0.706 | ||||||
| No | 1,986 | Ref | 1.46 (1.15, 1.85) 0.002 | 1.38 (0.99, 1.91) 0.056 | 1.50 (1.13, 1.98) 0.005 | 1.48 (1.00, 2.18) 0.048 | |
| Yes | 1,251 | Ref | 1.55 (1.16, 2.07) 0.003 | 1.79 (1.10, 2.92) 0.019 | 1.65 (1.15, 2.38) 0.007 | 2.60 (1.27, 5.33) 0.009 | |
| Hypertension | 0.985 | ||||||
| No | 2,463 | Ref | 1.49 (1.21, 1.83) <0.001 | 1.48 (1.08, 2.03) 0.015 | 1.51 (1.17, 1.93) 0.001 | 1.64 (1.10, 2.44) 0.016 | |
| Yes | 774 | Ref | 1.59 (1.08, 2.35) 0.019 | 1.68 (0.99, 2.87) 0.057 | 1.77 (1.11, 2.83) 0.017 | 1.86 (0.97, 3.55) 0.061 | |
| Diabetes | 0.639 | ||||||
| No | 3,037 | Ref | 1.53 (1.27, 1.85) <0.001 | 1.56 (1.18, 2.07) 0.002 | 1.59 (1.26, 1.99) <0.001 | 1.71 (1.20, 2.42) 0.003 | |
| Yes | 200 | Ref | 1.12 (0.49, 2.60) 0.787 | 0.64 (0.20, 2.06) 0.457 | 0.95 (0.35, 2.57) 0.912 | 1.33 (0.33, 5.25) 0.689 | |
| Heart disease | 0.547 | ||||||
| No | 2,925 | Ref | 1.54 (1.27, 1.86) <0.001 | 1.61 (1.21, 2.14) 0.001 | 1.55 (1.23, 1.95) <0.001 | 1.55 (1.06, 2.26) 0.023 | |
| Yes | 312 | Ref | 1.11 (0.57, 2.17) 0.760 | 0.92 (0.39, 2.13) 0.838 | 1.47 (0.69, 3.13) 0.317 | 1.90 (0.84, 4.29) 0.122 | |
| Stroke | 0.188 | ||||||
| No | 3,175 | Ref | 1.51 (1.26, 1.82) <0.001 | 1.51 (1.15, 1.99) 0.003 | 1.52 (1.22, 1.90) <0.001 | 1.63 (1.16, 2.31) 0.005 | |
| Yes | 62 | Ref | 0.57 (0.09, 3.50) 0.545 | 2.73 (0.28, 26.81) 0.390 | 5.63 (0.47, 67.04) 0.171 | 4.80 (0.43, 53.23) 0.201 | |
| Dyslipidemia | 0.558 | ||||||
| No | 2,847 | Ref | 1.47 (1.21, 1.79) <0.001 | 1.58 (1.18, 2.10) 0.002 | 1.47 (1.17, 1.86) 0.001 | 1.64 (1.14, 2.35) 0.007 | |
| Yes | 390 | Ref | 1.85 (1.03, 3.31) 0.038 | 1.25 (0.53, 2.97) 0.608 | 2.44 (1.24, 4.81) 0.010 | 1.96 (0.73, 5.25) 0.179 | |
| Lung disease | 0.475 | ||||||
| No | 3,003 | Ref | 1.53 (1.26, 1.85) <0.001 | 1.46 (1.10, 1.94) 0.009 | 1.57 (1.25, 1.98) <0.001 | 1.76 (1.23, 2.52) 0.002 | |
| Yes | 234 | Ref | 1.07 (0.52, 2.20) 0.861 | 2.33 (0.84, 6.48) 0.104 | 1.14 (0.50, 2.62) 0.754 | 1.01 (0.34, 3.00) 0.990 |
In addition to the stratification variables themselves, age, gender, education, marital status, hukou, current smoking status, drinking status, hypertension, diabetes, heart disease, stroke, dyslipidemia, and lung disease were adjusted.