| Overall | 5.61 (5.36 to 5.86) | 7.37 (6.87 to 7.87) | 7.75 (7.25 to 8.24) | 8.54 (7.98 to 9.10) | 9.34 (8.82 to 9.85) | 10.61 (9.50 to 11.72) | 11.61 (10.36 to 12.86) | 0.084 (0.069 to 0.098) | 0.114 (0.046 to 0.181) | 0.030 (-0.039 to 0.099) |
| Age group | | | | | | | | | | |
| 30–39 | 0.86 (0.67 to 1.05) | 1.13 (0.76 to 1.50) | 1.06 (0.64 to 1.47) | 1.01 (0.60 to 1.41) | 0.89 (0.54 to 1.24) | 1.67 (0.48 to 2.85) | 2.00 (0.76 to 3.24) | -0.001 (-0.011 to 0.009) | 0.056 (-0.008 to 0.119) | 0.056 (-0.007 to 0.120) |
| 40–49 | 3.20 (2.87 to 3.54) | 3.84 (3.10 to 4.58) | 3.25 (2.50 to 4.00) | 3.83 (3.03 to 4.64) | 3.68 (2.97 to 4.39) | 4.59 (2.90 to 6.27) | 5.56 (3.83 to 7.29) | 0.008 (-0.012 to 0.028) | 0.094 (0.003 to 0.185) | 0.086 (-0.008 to 0.179) |
| 50–59 | 8.48 (7.80 to 9.16) | 9.43 (8.22 to 10.63) | 9.63 (8.48 to 10.77) | 7.75 (6.67 to 8.82) | 9.50 (8.52 to 10.47) | 11.31 (9.02 to 13.61) | 11.36 (8.96 to 13.76) | 0.001 (-0.031 to 0.033) | 0.093 (-0.037 to 0.224) | 0.092 (-0.042 to 0.227) |
| ≥60 | 13.02 (12.30 to 13.74) | 17.40 (16.15 to 18.64) | 17.98 (16.86 to 19.10) | 20.38 (18.98 to 21.78) | 20.07 (19.00 to 21.14) | 20.74 (18.74 to 22.73) | 21.59 (19.56 to 23.62) | 0.156 (0.122 to 0.190) | 0.076 (-0.039 to 0.192) | -0.079 (-0.200 to 0.041) |
| Sex | | | | | | | | | | |
| Male | 6.00 (5.66 to 6.35) | 7.85 (7.10 to 8.59) | 8.29 (7.53 to 9.05) | 9.29 (8.44 to 10.13) | 10.05 (9.33 to 10.77) | 11.61 (10.03 to 13.20) | 13.67 (11.63 to 15.71) | 0.093 (0.072 to 0.113) | 0.181 (0.07 5 to 0.288) | 0.089 (-0.020 to 0.198) |
| Female | 5.24 (4.90 to 5.57) | 6.91 (6.27 to 7.55) | 7.23 (6.56 to 7.90) | 7.85 (7.14 to 8.55) | 8.66 (8.04 to 9.28) | 9.62 (8.31 to 10.93) | 9.60 (8.20 to 10.99) | 0.075 (0.057 to 0.094) | 0.047 (-0.031 to 0.124) | -0.029 (-0.108 to 0.051) |
| Region of residence | | | | | | | | | | |
| Urban | 5.33 (5.05 to 5.60) | 7.22 (6.65 to 7.80) | 7.33 (6.78 to 7.88) | 8.45 (7.83 to 9.07) | 8.64 (8.10 to 9.18) | 10.41 (9.19 to 11.63) | 10.75 (9.42 to 12.09) | 0.075 (0.059 to 0.091) | 0.105 (0.034 to 0.177) | 0.031 (-0.043 to 0.104) |
| Rural | 6.70 (6.12 to 7.28) | 7.93 (6.88 to 8.98) | 9.26 (8.14 to 10.39) | 8.91 (7.54 to 10.29) | 12.95 (11.46 to 14.45) | 11.63 (9.38 to 13.87) | 15.68 (12.70 to 18.66) | 0.135 (0.097 to 0.173) | 0.141 (-0.027 to 0.310) | 0.006 (-0.167 to 0.179) |
| Education | | | | | | | | | | |
| High school or lower education | 9.18 (8.69 to 9.66) | 12.72 (11.73 to 13.72) | 14.05 (13.00 to 15.10) | 16.12 (14.82 to 17.41) | 18.99 (17.84 to 20.14) | 21.71 (19.19 to 24.22) | 21.81 (19.37 to 24.26) | 0.228 (0.198 to 0.259) | 0.143 (0.010 to 0.277) | -0.085 (-0.222 to 0.052) |
| College or higher education | 3.33 (3.08 to 3.58) | 4.37 (3.87 to 4.87) | 4.59 (4.09 to 5.09) | 5.39 (4.88 to 5.90) | 6.10 (5.65 to 6.56) | 7.70 (6.56 to 8.84) | 8.83 (7.53 to 10.12) | 0.065 (0.051 to 0.079) | 0.136 (0.068 to 0.204) | 0.071 (0.001 to 0.140) |
| Household income | | | | | | | | | | |
| Lowest and second quartile | 7.14 (6.75 to 7.53) | 10.57 (9.68 to 11.45) | 10.28 (9.53 to 11.03) | 12.87 (11.88 to 13.85) | 13.43 (12.58 to 14.27) | 14.83 (13.08 to 16.58) | 16.85 (15.12 to 18.58) | 0.146 (0.122 to 0.169) | 0.171 (0.074 to 0.268) | 0.026 (-0.075 to 0.126) |
| Third and highest quartile | 4.21 (3.93 to 4.49) | 5.06 (4.50 to 5.62) | 5.67 (5.08 to 6.26) | 5.53 (4.96 to 6.11) | 6.57 (6.05 to 7.08) | 8.14 (6.93 to 9.36) | 8.40 (7.04 to 9.76) | 0.051 (0.035 to 0.066) | 0.091 (0.019 to 0.163) | 0.040 (-0.034 to 0.114) |
| Smoking status | | | | | | | | | | |
| Current and ex-smoker | 6.56 (5.85 to 7.27) | 7.62 (6.87 to 8.38) | 8.52 (7.73 to 9.31) | 9.21 (8.28 to 10.13) | 10.13 (9.39 to 10.87) | 11.24 (9.59 to 12.88) | 13.88 (11.86 to 15.89) | 0.084 (0.056 to 0.112) | 0.188 (0.081 to 0.295) | 0.104 (-0.007 to 0.214) |
| Non-smoker | 5.46 (5.19 to 5.72) | 7.15 (6.49 to 7.81) | 7.07 (6.42 to 7.71) | 8.15 (7.49 to 8.81) | 8.71 (8.08 to 9.33) | 10.10 (8.81 to 11.38) | 9.81 (8.32 to 11.30) | 0.076 (0.060 to 0.092) | 0.054 (-0.027 to 0.136) | -0.022 (-0.105 to 0.061) |
| BMI group | | | | | | | | | | |
| Overweight or obese | 7.04 (6.33 to 7.76) | 9.18 (8.49 to 9.87) | 8.81 (8.17 to 9.46) | 10.14 (9.38 to 10.89) | 11.39 (10.70 to 12.09) | 11.94 (10.43 to 13.46) | 13.19 (11.48 to 14.89) | 0.087 (0.060 to 0.113) | 0.090 (-0.002 to 0.181) | 0.003 (-0.092 to 0.098) |
| Underweight or normal | 5.37 (5.10 to 5.64) | 4.77 (4.17 to 5.36) | 6.23 (5.49 to 6.96) | 6.25 (5.54 to 6.96) | 6.24 (5.66 to 6.82) | 8.29 (6.79 to 9.78) | 9.16 (7.47 to 10.85) | 0.030 (0.015 to 0.045) | 0.146 (0.056 to 0.235) | 0.116 (0.025 to 0.207) |