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. 2023 Feb 21;131(2):027008. doi: 10.1289/EHP11347

Table 3.

Association between air pollution and incidence of type 2 diabetes by sociodemographic factors.

n cases PM2.5 (per 5μg/m3) UFP (per 10,000particles/cm3) Elemental carbon (per 1μg/m3) NO2 (per 10μg/m3)
Cox model
HR (95% CI)a
Aalen model
Rate (per 100,000 py) difference (95% CI)a,b
Cox model
HR (95% CI)a
Aalen model
Rate (per 100,000 py) difference (95% CI)a,b
Cox model
HR (95% CI)a
Aalen model
Rate (per 100,000 py) difference (95% CI)a,b
Cox model
HR (95% CI)a
Aalen model
Rate (per 100,000 py) difference (95% CI)a,b
All 113,985 1.17 (1.13, 1.21) 123 (96, 150) 1.16 (1.13, 1.19) 124 (104, 144) 1.10 (1.08, 1.12) 102 (80, 124) 1.10 (1.08, 1.11) 73 (62, 85)
Sex
 Men 65,245 1.23 (1.18, 1.28) 198 (165, 232) 1.22 (1.19, 1.26) 210 (183, 279) 1.12 (1.10, 1.15) 183 (147, 220) 1.13 (1.11, 1.15) 119 (104, 134)
 Women 48,740 1.09 (1.04, 1.14) 51 (23, 79) 1.07 (1.04, 1.11) 47 (25, 69) 1.03 (1.00, 1.07) 26 (2, 49) 1.06 (1.04, 1.08) 37 (26, 49)
Education
 Short 49,162 1.12 (1.07, 1.17) 96 (58, 133) 1.12 (1.08, 1.16) 121 (90, 152) 1.07 (1.04, 1.10) 101 (66, 136) 1.08 (1.06, 1.10) 75 (57, 92)
 Medium 50,992 1.24 (1.19, 1.30) 169 (138, 199) 1.23 (1.19, 1.27) 172 (147, 196) 1.12 (1.10, 1.15) 147 (113, 181) 1.14 (1.12, 1.16) 103 (90, 117)
 Long 13,831 1.10 (1.02, 1.19) 48 (12, 84) 1.05 (0.99, 1.11) 16 (12,44) 0.98 (0.92, 1.06) 25 (58,8) 1.04 (1.01, 1.07) 14 (1,29)
Disposable income
 Quintile 1 (low) 41,633 1.12 (1.07, 1.17) 71 (30, 112) 1.11 (1.07, 1.15) 89 (56, 122) 1.05 (1.02, 1.09) 59 (23, 96) 1.07 (1.05, 1.09) 56 (38, 75)
 Quintile 2–4 60,530 1.20 (1.15, 1.25) 140 (111, 170) 1.20 (1.16, 1.23) 147 (122, 171) 1.13 (1.11, 1.16) 141 (109, 173) 1.13 (1.11, 1.15) 90 (77, 103)
 Quintile 5 (high) 11,822 1.23 (1.14, 1.33) 141 (103, 179) 1.15 (1.08, 1.22) 93 (63, 122) 1.06 (0.99, 1.13) 54 (18, 88) 1.08 (1.04, 1.11) 51 (35, 67)
Occupation
 White-collar 14,107 1.27 (1.18, 1.36) 194 (157, 231) 1.19 (1.12, 1.25) 138 (109, 167) 1.15 (1.09, 1.21) 141 (106, 175) 1.12 (1.09, 1.15) 78 (62, 94)
 Blue-collar 21,423 1.20 (1.13, 1.27) 199 (161, 236) 1.26 (1.21, 1.32) 209 (177, 240) 1.15 (1.11, 1.19) 206 (171, 242) 1.16 (1.14, 1.19) 122 (105, 139)
Cohabiting status
 Cohabiting 78,945 1.22 (1.17, 1.26) 141 (113, 168) 1.20 (1.17, 1.24) 145 (123, 167) 1.11 (1.09, 1.14) 126 (100, 152) 1.14 (1.13, 1.16) 101 (89, 113)
 Living alone 35,040 1.08 (1.03, 1.13) 67 (29, 105) 1.07 (1.04, 1.11) 70 (40, 101) 1.03 (0.99, 1.07) 45 (6, 84) 1.04 (1.02, 1.06) 27 (12, 43)

Note: CI, confidence interval; HR, hazard ratio; py, person-years: .

a

Analyses were adjusted for age, sex, calendar year, education, cohabiting status, personal income, country of birth, and area-level percentage of population with only basic education, with non-Western background, and with criminal record.

b

Risk estimates calculated in Aalen additive hazard model is given as a rate difference per 100,000 py.