Table 1 Characteristics of participants with or without Cardiometabolic diseases.

From: Association between air pollution and lifestyle with the risk of developing mild cognitive impairment and dementia in individuals with cardiometabolic diseases

Characteristic

Total population (N = 438681)

Number of CMDs

No(N = 363625)

One(N = 66324)

Two(N = 8318)

Three(N = 414)

Age, years, mean (SD)

56.51(8.08)

55.73(8.10)

60.04(6.97)

61.71(6.06)

62.24(5.69)

Sex, n(%)

     

Female

239,091(54.50)

210,973(58.02)

25,579(38.57)

2435(29.27)

104(25.12)

Male

199,590(45.50)

152,652(41.98)

40,745(61.43)

5883(70.73)

310(74.88)

Race/ethnicity, n(%)

     

White

414,781(94.55)

344,941(94.86)

62,036(93.53)

7438(89.42)

366(88.41)

Asian

9352(2.13)

6768(1.86)

2050(3.09)

509(6.12)

25(6.04)

Black

6794(1,55)

5559(1.53)

1059(1.60)

169(2.03)

7(1.69)

Other

6354(1.45)

5234(1.44)

945(1.42)

161(1.94)

14(3.38)

Missing

1400(0.32)

1123(0.31)

234(0.35)

41(0.49)

2(0.48)

Occupation status, n(%)

     

Employed

257,444(58.69)

226,329(62.24)

28,551(43.05)

2505(30.12)

59(14.25)

Unemployed

31,835(7.26)

24,424(6.72)

6016(9.07)

1289(15.50)

106(25.60)

Retired

145,660(33.20)

109,807(30.20)

31,157(46.98)

4452(53.52)

244(58.94)

Missing

3742(0.85)

3065(0.84)

600(0.90)

72(0.87)

5(1.21)

Education level, n(%)

     

College or University

141,860(32.34)

123,544(33.98)

16,623(25.06)

1615(19.42)

78(18.84)

A level/AS level or equivalent

49,209(11.22)

42,384(11.66)

6132(9.25)

673(8.09)

20(4.83)

O level/GCSEs or equivalent

95,155(21.69)

80,020(22.01)

13,444(20.27)

1619(19.46)

72(17.39)

Professional Qualifications

76,016(17.33)

61,687(16.96)

12,637(19.05)

1627(19.56)

65(15.70)

None of the above

69,280(15.79)

50,455(13.88)

16,081(24.25)

2573(30.93)

171(41.30)

Missing

7161(1.63)

5535(1.52)

1407(2.12)

211(2.54)

8(43.24)

TDI, n(%)

     

Low

80,275(18.30)

63,050(17.34)

14,565(21.96)

2491(29.95)

169(40.82)

Medium

130,756(29.81)

108,356(29.80)

19,754(29.78)

2532(30.44)

114(27.54)

High

227,151(51.78)

191,803(52.75)

31,927(48.14)

3290(39.55)

131(31.64)

Missing

499(0.11)

416(0.11)

78(0.12)

5(0.06)

0(0.00)

BMI (kg/m2), n(%)

     

< 18.5

2272(0.52)

2052(0.56)

200(0.30)

20(0.24)

0(0.00)

18.5–24.9

143,735(32.77)

129,391(35.58)

13,464(20.30)

847(10.18)

33(7.97)

25-29.9

186,225(42.45)

154,297(42.43)

28,811(43.44)

3004(36.11)

113(27.29)

≥ 30

104,323(23.78)

76,336(20.99)

23,388(35.26)

4337(52.14)

262(63.29)

Missing

2126(0.48)

1549(0.43)

461(0.70)

110(1.32)

6(1.45)

APOE Ƹ4 genotype, n(%)

     

No

323,909(73.84)

268,410(73.82)

49,023(73.91)

6155(74.00)

321(77.54)

Yes

102,847(23.44)

85,460(23.50)

15,423(23.25)

1883(22.64)

81(19.57)

Missing

11,925(2.72)

9755(2.68)

1878(2.83)

280(3.37)

12(2.90)

Hypertension status, n(%)

     

No

268,504(61.21)

239,021(65.73)

27,554(41.54)

1875(22.54)

54(13.04)

Yes

170,177(38.79)

124,604(34.27)

38,770(58.46)

6443(77.46)

360(86.96)

Depressive status, n(%)

     

No

333,544(76.03)

274,260(75.42)

52,322(78.89)

6629(79.69)

333(80.43)

Yes

105,137(23.97)

89,365(24.58)

14,002(21.11)

1689(20.31)

81(19.57)

Dyslipidemia, n(%)

     

No

364,693(83.13)

308,945(84.96)

50,322(75.87)

5184(62.32)

242(58.45)

Yes

73,988(16.87)

54,680(15.04)

16,002(24.13)

3134(37.68)

172(41.55)

Hypertriglyceridemia, n(%)

     

No

275,318(62.76)

235,779(64.84)

35,411(53.39)

3945(47.43)

183(44.20)

Yes

163,363(37.24)

127,846(35.16)

30,913(46.61)

4373(52.57)

231(55.80)

Serum 25(OH)D status, n(%)

     

Severely deficient

47,813(10.90)

37,845(10.41)

8407(12.68)

1476(17.74)

85(20.53)

Moderately deficient

162,302(37.00)

133,753(36.78)

25,012(37.71)

3362(40.42)

175(42.27)

Insufficient and above

181,575(41.39)

152,776(42.01)

25,988(39.18)

2700(32.46)

111(26.81)

Missing

46,991(10.71)

39,251(10.79)

6917(10.43)

780(9.38)

43(10.39)

Lipid-lowering medication usage, n(%)

     

No

365,619(83.35)

328,091(90.23)

35,740(53.89)

1745(20.98)

43(10.39)

Yes

73,062(16.65)

35,534(9.77)

30,584(46.11)

6573(79.02)

371(89.61)

Aspirin use status, n(%)

     

No

380,755(86.80)

335,222(92.19)

42,199(63.63)

3213(38.63)

121(29.23)

Yes

57,926(13.20)

28,403(7.81)

24,125(36.37)

5105(61.37)

293(70.77)

Healthy lifestyle score

     

0–1

5673(1.29)

4303(1.18)

1149(1.73)

204(2.45)

17(4.11)

2–3

126,723(28.89)

100,912(27.75)

22,240(33.53)

3370(40.51)

201(48.55)

4

130,806(29.82)

108,162(29.75)

20,032(30.20)

2486(29.89)

126(30.43)

5–7

175,479(40.00)

150,248(41.32)

22,903(34.53)

2258(27.15)

70(16.91)

Ambient air pollution, n(%)

     

Low

136,374(31.09)

114,967(31.62)

19,358(29.19)

1965(23.62)

84(20.29)

Medium

158,524(36.14)

130,936(36.01)

24,318(36.67)

3122(37.53)

148(35.75)

High

143,783(32.78)

117,722(32.37)

22,648(34.15)

3231(38.84)

182(43.96)

PM2.5 (µg/m3), n(%)

     

Q1

111,914(25.51)

94,394(25.96)

15,840(23.88)

1614(19.40)

66(15.94)

Q2

109,733(25.01)

91,185(25.08)

16,447(24.80)

2004(24.09)

97(23.43)

Q3

109,104(24.87)

89,860(24.71)

16,882(25.45)

2256(27.12)

106(25.60)

Q4

107,930(24.60)

88,186(24.25)

17,155(25.87)

2444(29.38)

145(35.02)

PM2.5–10 (µg/m3), n(%)

     

Q1

111,959(25.52)

93,549(25.73)

16,383(24.70)

1929(23.19)

98(23.67)

Q2

110,324(25.15)

91,559(25.18)

16,574(24.99)

2092(25.15)

99(23.91)

Q3

108,160(24.66)

89,409(24.59)

16,545(24.95)

2103(25.28)

103(24.88)

Q4

108,238(24.67)

89,108(24.51)

16,822(25.36)

2194(26.38)

114(27.54)

PM10 (µg/m3), n(%)

     

Q1

110,942(25.29)

92,804(25.52)

16,266(24.53)

1782(21.42)

90(21.74)

Q2

110,594(25.21)

91,756(25.23)

16,618(25.06)

2109(25.35)

111(26.81)

Q3

108,544(24.74)

89,552(24.63)

16,742(25.24)

2162(25.99)

88(21.26)

Q4

108,601(24.76)

89,513(24.62)

16,698(25.18)

2265(27.23)

125(30.19)

NO2 (µg/m3), n(%)

     

Q1

111,556(25.43)

94,241(25.92)

15,706(23.68)

1543(18.55)

66(15.94)

Q2

110,210(25.12)

91,150(25.07)

16,870(25.44)

2086(25.08)

104(25.12)

Q3

109,214(24.90)

89,746(24.68)

17,070(25.74)

2285(27.47)

113(27.29)

Q4

107,701(24.55)

88,488(24.33)

16,678(25.15)

2404(28.90)

131(31.64)

NOX (µg/m3), n(%)

     

Q1

111,333(25.38)

94,153(25.89)

15,573(23.48)

1539(18.50)

68(16.43)

Q2

110,246(25.13)

91,371(25.13)

16,695(25.17)

2089(25.11)

91(21.98)

Q3

109,145(24.88)

89,711(24.67)

17,075(25.74)

2248(27.03)

111(26.81)

Q4

107,957(24.61)

88,390(24.31)

16,981(25.60)

2442(29.36)

144(34.78)

Mild cognitive impairment, n(CIR)

279(0.043)

203(0.038)

62(0.060)

14(0.091)

0(0.000)

All-cause dementia, n(CIR)

8101(1.243)

5032(0.943)

2463(2.407)

557(3.649)

49(6.449)

Alzheimer’s disease, n(CIR)

3635(0.556)

2433(0.455)

994(0.967)

193(1.253)

15(1.885)

Vascular dementia, n(CIR)

1737(0.266)

830(0.155)

668(0.649)

209(1.353)

30(3.814)

Survival time, M (P25, P75), year

     

Cognitive impairment

14.91(14.30,15.74)

14.71(14.33,15.68)

15.53(14.09,16.10)

18.49(12.72,22.51)

18.65(10.12,24.60)

All-cause dementia

14.86(14.23,15.73)

14.68(14.31,15.68)

15.43(14.04,16.08)

18.35(12.52,22.26)

18.35(9.83,24.27)

Alzheimer’s disease

14.90(14.29,15.73)

14.70(14.32,15.68)

15.51(14.07,16.10)

18.51(12.78,22.52)

19.22(10.12,24.77)

Vascular dementia

14.91(14.30,15.74)

14.71(14.33,15.68)

15.52(14.08,16.10)

18.56(12.90,22.60)

19.00(10.63,24.52)

  1. Note: Data is n (%).
  2. Abbreviations: mean (SD), arithmetic mean (Standard Deviation); TDI, Townsend deprivation index; BMI, Body mass index; APOE, apolipoprotein E; PM2.5, particulate matter with aerodynamic diameter ≤ 2.5 μm; PM10, particulate matter with an aerodynamic diameter ≤ 10 μm; PM2.5–10, particulate matter with an aerodynamic diameter between 2.5 and 10 μm; NO2, nitrogen dioxide; NOX, nitrogen oxides; Q 1: quartile 1; CIR: Crude incidence rate; M (P25, P75), median (Percentile25, Percentile75).