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Table 1 Baseline characteristics and infection status of all participants from UK biobank

From: Associations of socioeconomic status with infectious diseases mediated by lifestyle, environmental pollution and chronic comorbidities: a comprehensive evaluation based on UK Biobank

Variable

All

(N = 412,258)

High SES

(N1 = 79,407)

Medium SES

(N2 = 210,475)

Low SES

(N3 = 111,127)

P

White ethnicity or racea

392,279 (95.2)

77,577 (95.8)

206,527 (95.6)

108,175 (93.8)

 < 0.0001

TDIb

− 2.1744 (− 3.6664, 0.4384)

− 2.7174 (− 4.011, − 0.5936)

− 2.4366 (− 3.7872, − 0.2287)

− 0.9134 (− 2.9558, 2.2916)

 < 0.0001

Femalea

215,933 (52.4)

39,320 (48.6)

111,935 (51.8)

64,678 (56.1)

 < 0.0001

Ageb

56.1625 ± 8.0839

52.5195 ± 7.2159

55.7701 ± 7.9982

59.4541 ± 7.5375

 < 0.0001

BMIb

27.3836 ± 4.7556

26.4616 ± 4.2599

27.3404 ± 4.6486

28.1116 ± 5.1484

 < 0.0001

BMI groupa

     

 ≤ 18.5

2055 (0.5)

388 (0.5)

936 (0.4)

731 (0.6)

 < 0.0001

 18.51–29.9

311,295 (75.5)

66,480 (82.1)

164,607 (76.2)

80,208 (69.5)

 

 ≥ 30

98,908 (24.0)

14,081 (17.4)

50,424 (23.3)

34,403 (29.8)

 

SES a

     

 High

80,949 (19.6)

80,949 (100)

0 (0)

0 (0)

 < 0.0001

 Medium

215,967 (52.4)

0 (0)

215,967 (100)

0 (0)

 

 Low

115,342 (28.0)

0 (0)

0 (0)

115,342 (100)

 

Income (£)a

     

 > 100,000

22,422 (5.4)

21,977 (27.1)

0 (0)

445 (0.4)

 < 0.0001

 52,000–100,000

84,213 (20.4)

57,688 (71.3)

26,525 (12.3)

0 (0)

 

 31,000–51,999

107,833 (26.2)

1284 (1.6)

106,067 (49.1)

482 (0.4)

 

 18,000–30,999

104,914 (25.4)

0 (0)

83,375 (38.6)

21,539 (18.7)

 

 < 18,000

92,876 (22.5)

0 (0)

0 (0)

92,876 (80.5)

 

Educationa

     

 College or University degree

144,681 (35.1)

63,515 (78.5)

65,794 (30.5)

15,372 (13.3)

 < 0.0001

 A levels/AS levels or equivalent

48,049 (11.7)

13,909 (17.2)

25,961 (12.0)

8179 (7.1)

 

 O levels/GCSEs or equivalent

87,724 (21.3)

2024 (2.5)

64,330 (29.8)

21,370 (18.5)

 

 CSEs or equivalent

22,284 (5.4)

250 (0.3)

15,863 (7.3)

6171 (5.4)

 

 NVQ or HND or HNC or equivalent

27,310 (6.6)

490 (0.6)

18,833 (8.7)

7987 (6.9)

 

 Other professional qualifications

20,944 (5.1)

761 (0.9)

15,190 (7.0)

4993 (4.3)

 

 None of the above

61,266 (14.9)

0 (0)

9996 (4.6)

51,270 (44.5)

 

 Unemployeda

30,261 (7.3)

4850 (6.0)

3407 (1.6)

22,004 (19.1)

 < 0.0001

Lifestyle scoresa

     

 0–1

77,022 (26.5)

15,471 (24.8)

38,605 (25.0)

22,946 (31.1)

 < 0.0001

 2–3

159,055 (54.8)

36,400 (58.3)

86,751 (56.2)

35,904 (48.7)

 

 4–6

54,341 (18.7)

10,613 (17.0)

28,896 (18.7)

14,832 (20.1)

 

Lifestyle factors

     

 No current smokinga

243,416 (59.2)

52,813 (65.3)

130,188 (60.4)

60,415 (52.6)

 < 0.0001

 Regular physical activitya

95,450 (23.5)

15,571 (19.3)

51,377 (24.0)

28,502 (25.5)

 < 0.0001

 Healthy dieta

96,570 (23.6)

19,229 (23.8)

50,883 (23.7)

26,458 (23.3)

0.006

 No alcohol consumptiona

15,550 (3.8)

1476 (1.8)

6508 (3.0)

7566 (6.6)

 < 0.0001

 Healthy sleep patterna

136,438 (35.5)

32,085 (41.9)

72,595 (36.0)

31,758 (29.9)

 < 0.0001

 Never use cannabisa

106,210 (76.8)

26,058 (67.6)

60,802 (79.6)

19,350 (83.2)

 < 0.0001

 APSb

64.1294 (58.4819, 69.7389)

63.2826 (56.7590, 69.6608)

63.6288 (58.1162, 69.0290)

65.4867 (60.2623, 71.0704)

 < 0.0001

 EPSb

116.3913 (106.8239, 126.3875)

115.0965 (104.0680, 126.3135)

115.5374 (106.1875, 125.1584)

118.6827 (109.7671, 128.6168)

 < 0.0001

Environmental pollutants

     

 PM2.5b

9.9200 (9.2800, 10.5600)

9.8000 (9.0800, 10.4800)

9.8800 (9.2400, 10.4800)

10.0900 (9.4800, 10.7300)

 < 0.0001

 PM2.5–10b

6.1000 (5.8400, 6.6300)

6.1100 (5.8300, 6.6500)

6.0900 (5.8300, 6.5900)

6.1300 (5.8600, 6.6600)

 < 0.0001

 PM10b

16.0200 (15.2300, 16.9900)

16.0000 (15.0700, 17.0400)

15.9800 (15.1800, 16.9200)

16.1000 (15.4200, 17.0900)

 < 0.0001

 NO2b

26.1000 (21.3600, 31.1400)

25.8500 (20.2900, 31.5800)

25.6000 (21.0500, 30.5100)

27.1500 (22.6800, 31.9300)

 < 0.0001

 NOXb

42.2600 (34.2300, 50.6300)

41.0500 (32.0600, 50.4300)

41.5300 (33.7300, 49.5600)

44.2200 (36.7300, 52.6700)

 < 0.0001

 Noiseb

55.0900 (53.6600, 57.1533)

55.100 (53.6800, 57.2300)

55.0433 (53.6200, 57.0800)

55.1700 (53.7300, 57.2533)

 < 0.0001

 Traffic intensityb

17,044 (12,581, 25,195)

17,005 (12,591, 24,107)

16,989 (12,378, 25,182)

17,314 (12,802, 25,598)

 < 0.0001

 Distance to roadb

378.7879 (167.7852, 751.8797)

374.5318 (165.8375, 757.5758)

390.6250 (172.7116, 775.1938)

362.3188 (159.7444, 714.2857)

 < 0.0001

Chronic comorbidities

     

 CVDa

37,144 (9.0)

3312 (4.1)

16,717 (7.7)

17,115 (14.8)

 < 0.0001

 CADa

5308 (1.3)

430 (0.5)

2237 (1.0)

2641 (2.3)

 < 0.0001

 AFa

5080 (1.2)

578 (0.7)

2363 (1.1)

2139 (1.9)

 < 0.0001

 Strokea

2034 (0.5)

225 (0.3)

796 (0.4)

1013 (0.9)

 < 0.0001

 Hypertensiona

30,701 (7.4)

2522 (3.1)

13,694 (6.3)

14,485 (12.6)

 < 0.0001

 Diabetesa

8379 (2.0)

600 (0.7)

3404 (1.6)

4375 (3.8)

 < 0.0001

 Psychiatric disordersa

60,105 (14.6)

11,349 (14.0)

30,778 (14.3)

17,978 (15.6)

 < 0.0001

 Anxietya

23,690 (5.7)

4923 (6.1)

12,753 (5.9)

6014 (5.2)

 < 0.0001

 Depressiona

46,419 (11.3)

8422 (10.4)

23,451 (10.9)

14,546 (12.6)

 < 0.0001

 Bipolar disordera

1635 (0.4)

261 (0.3)

653 (0.3)

721 (0.6)

 < 0.0001

 Cancera

31,322 (7.6)

4619 (5.7)

15,975 (7.4)

10,728 (9.3)

 < 0.0001

 Infectious diseasesa

60,771 (14.7)

7276 (9.0)

28,383 (13.1)

25,112 (21.8)

 < 0.0001

 Respiratory infectious diseasesa

2119 (0.5)

247 (0.3)

933 (0.4)

939 (0.8)

 < 0.0001

 Digestive infectious diseasesa

15,019 (3.5)

1806 (2.2)

6933 (3.1)

6280 (5.2)

 < 0.0001

 Blood or sexually transmitted infectious diseasesa

869 (0.2)

106 (0.1)

349 (0.2)

414 (0.4)

 < 0.0001

  1. TDI Townsend deprivation, BMI body mass index, SES socioeconomic status, APS air pollution score, EPS environment pollution score, PM2.5 particulate matter ≤ 2.5 μm, PM2.5-10 particulate matter 2.5–10 μm, PM10 particulate matter ≤ 10 μm, NOx nitrogen oxides, NO2 nitrogen dioxide, CVD cardiovascular disease, CAD cardiovascular diseases, AF atrial fibrillation
  2. aCategorical variables are presented as number (percentage)
  3. bContinuous variables are presented as mean ± standard deviation or median (quartile)