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Table 1 Baseline characteristics of the primary analysis cohorts

From: Renin-angiotensin system inhibitors and susceptibility to COVID-19 in patients with hypertension: a propensity score-matched cohort study in primary care

Primary Analysis Cohort

Unmatched

Propensity score matched

Unmatched

Propensity score matched

ACE-I (n = 31,194)

CCB (n = 27,500)

ACE-I (n = 18,895)

CCB (n = 18,895)

ARB (n = 13,377)

CCB (n = 27,500)

ARB (n = 10,623)

CCB (n = 10,623)

Age, mean (SD)

60.8 (11.7)

67.4 (10.8)

64.7 (11.2)

63.4 (9.6)

63.8 (11.3)

67.4 (10.8)

65.0 (11.1)

64.55 (11.5)

Age categories, n (%)

 18–30 years

123 (0.4)

28 (0.1)

34 (0.2)

28 (0.2)

23 (0.2)

28 (0.1)

14 (0.1)

26 (0.2)

 30–40 years

875 (2.8)

309 (1.1)

213 (1.1)

308 (1.6)

206 (1.5)

309 (1.1)

118 (1.1)

238 (2.2)

 40–50 years

4466 (14.3)

1302 (4.7)

1445 (7.7)

1297 (6.9)

1298 (9.7)

1302 (4.7)

834 (7.9)

865 (8.1)

 50–60 years

10,214 (32.7)

4836 (17.6)

5018 (26. 6)

4694 (24.8)

3556 (26.6)

4836 (17.6)

2623 (24.7)

2472 (23.3)

 60–70 years

8448 (27.1)

9521 (34.6)

5879 (31. 1)

7969 (42.2)

4157 (31.1)

9521 (34.6)

3388 (31.9)

3497 (32.9)

 70–80 years

5380 (17.3)

8376 (30.5)

4666 (24.7)

3974 (21.0)

3097 (23.2)

8376 (30.5)

2703 (25.4)

2617 (24.6)

 > 80 years

1688 (5.4)

3128 (11.4)

1640 (8.7)

625 (3.3)

1040 (7.8)

3128 (11.4)

943 (8.9)

908 (8.6)

Sex (Male), n (%)

15,213 (48.8)

12,547 (45.6)

8870 (46.9)

9243 (48.9)

5379 (40.2)

12,547 (45.6)

4628 (43.6)

4463 (42.0)

Smoker categories, n (%)

 Non Smoker

17,968 (57.6)

15,514 (56.4)

10,725 (56.8)

10,668 (56.5)

8390 (62.7)

15,514 (56.4)

6384 (60.1)

6473 (60.9)

 Ex-Smoker

9073 (29.1)

8329 (30.3)

5677 (30.0)

5700 (30.2)

3865 (28.9)

8329 (30.3)

3186 (30.0)

3137 (29.5)

 Smoker

3962 (12.7)

3483 (12.7)

2402 (12.7)

2431 (12.9)

1058 (7.9)

3483 (12.7)

1005 (9.5)

967 (9.1)

 Missing

191 (0.6)

174 (0.6)

91 (0.5)

96 (0.5)

64 (0.5)

174 (0.6)

48 (0.5)

46 (0.4)

Drinker Categories, n (%)

 Non-drinker

4716 (15.1)

4186 (15.2)

2874 (15.2)

2856 (15.1)

2013 (15.1)

4186 (15.2)

1587 (14.9)

1508 (14.2)

 Drinker without excess

11,716 (37.6)

10,281 (37.4)

7082 (37.5)

7134 (37.8)

5157 (38.6)

10,281 (37.4)

4023 (37.9)

3976 (37.4)

 Excessive Drinker

7614 (24.4)

6238 (22.7)

4464 (23.6)

4673 (24.7)

2908 (21.7)

6238 (22.7)

2414 (22.7)

2368 (22.3)

 Missing

7148 (22.9)

6795 (24.7)

4475 (23.7)

4232 (22.4)

3299 (24.7)

6795 (24.7)

2599 (24.5)

2771 (26.1)

BMI, mean (SD)

30.3 (6.4)

28.44 (5.6)

29.36 (6.0)

29.48 (5.7)

30.37 (6.2)

28.44 (5.6)

29.58 (5.9)

29.65 (5.9)

BMI Categories, n (%)

 Underweight (< 18.5)

173 (0.6)

343 (1.3)

151 (0.8)

105 (0. 6)

67 (0.5)

343 (1.3)

65 (0.6)

62 (0.6)

 Underweight (< 25)

5597 (17.9)

6898 (25.1)

4059 (21.5)

3645 (19.3)

2243 (16.8)

6898 (25.1)

2074 (19.5)

2033 (19.1)

 Overweight (25–30)

10,948 (35.1)

10,536 (38.3)

7156 (37.9)

7171 (38.0)

4718 (35.3)

10,536 (38.3)

4055 (38.2)

3894 (36.7)

 Obese (> 30)

13,300 (42.6)

8470 (30.8)

6771 (35.8)

7271 (38.5)

5854 (43.8)

8470 (30.8)

4004 (37.7)

4185 (39.4)

 Missing

1176 (3.8)

1253 (4.6)

758 (4.0)

703 (3.7)

495 (3.7)

1253 (4.6)

425 (4.0)

449 (4.2)

Hypertension duration, mean years (SD)

9.8 (7.4)

8.6 (7.5)

9.4 (6.9)

9.4 (8.0)

11.4 (7.5)

8.6 (7.5)

10.5 (7.0)

11.3 (8.3)

Age at hypertension diagnosis, mean (SD)

51.0 (10.9)

58.8 (11.2)

55.3 (10.4)

54.0 (9.1)

52.4 (10.9)

58.8 (11.2)

54.5 (10.4)

53.2 (11.0)

Systolic BP, mean (SD)

135.9 (13.8)

137.3 (13.6)

136.7 (14.0)

136.4 (13.1)

136.3 (13.6)

137.3 (13.6)

136.8 (13.6)

136.6 (13.4)

Diastolic BP, mean (SD)

81.7 (9.4)

79.76 (9.3)

80.6 (9.3)

81.09 (9.0)

80.8 (9.1)

79.8 (9.3)

80.5 (9.2)

80.5 (9.3)

Missing, n (%)

80 (0.3)

63 (0.2)

0 (0%)

0 (0%)

22 (0.2)

63 (0.2)

0 (0%)

0 (0%)

Cholesterol, mean (SD)

5.13 (1.03)

5.13 (1.04)

5.12 (1.04)

5.13 (1.04)

5.13 (1.01)

5.13 (1.04)

5.14 (1.02)

5.13 (1.03)

Cholesterol Categories, n (%)

 < 5.2 mmol/L

17,051 (54.7)

14,915 (54.2)

10,430 (55.2)

10,394 (55.0)

7415 (55.4)

14,915 (54.2)

5820 (54.8)

5894 (55.5)

 5.2–6.2 mmol/L

8852 (28.4)

7712 (28.0)

5262 (27.9)

5323 (28.2)

3836 (28.7)

7712 (28.0)

3026 (28.5)

2929 (27.6)

 > = 6.2 mmol/L

4153 (13.3)

3747 (13.6)

2543 (13.5)

2580 (13.7)

1699 (12.7)

3747 (13.6)

1419 (13.4)

1404 (13.2)

 Missing

1138 (3.7)

1126 (4.1)

660 (3.5)

598 (3.2)

427 (3.2)

1126 (4.1)

358 (3.4)

396 (3.7)

HDL, mean (SD)

1.44 (0.43)

1.54 (0.46)

1.49 (0.44)

1.48 (0.44)

1.48 (0.43)

1.54 (0.46)

1.50 (0.44)

1.50 (0.45)

HDL categories, n (%)

 < 1.55 mmol/L

19,720 (63.2)

14,873 (54.1)

10,949 (58.0)

11,464 (60. 7)

8160 (61.0)

14,873 (54.1)

6214 (58.5)

6251 (58.8)

 > = 1.55 mmol/L

9851 (31.6)

11,114 (40.4)

7007 (37.1)

6566 (34.8)

4621 (34.5)

11,114 (40.4)

3915 (36.9)

3818 (35.9)

 Missing

1623 (5.20)

1513 (5.5)

939 (5.0)

865 (4.6)

596 (4.5)

1513 (5.5)

494 (4.7)

554 (5.2)

eGFR, mean (SD)

86.1 (14.7)

82.8 (13.8)

83.33 (14.3)

85.08 (14.0)

82.9 (14.6)

82.8 (13.8)

82.36 (14.2)

83.89 (14.7)

eGFR category, n (%)

 > 60 (Stage 2 and above)

29,735 (95.3)

25,680 (93.4)

17,806 (94.2)

17,924 (94.9)

12,538 (93.7)

25,680 (93.4)

9981 (94.0)

9927 (93.5)

 30–59(Stage 3)

1127 (3.6)

1270 (4.6)

847 (4.5)

792 (4.2)

713 (5.3)

1270 (4.6)

530 (5.0)

578 (5.4)

 Missing

332 (1.1)

550 (2.0)

242 (1.3)

179 (1.0)

126 (0.9)

550 (2.0)

112 (1.1)

118 (1.1)

Baseline conditions, n (%)

 Atrial fibrillation

726 (2.3)

743 (2.7)

503 (2.7)

502 (2.7)

384 (2.9)

743 (2.7)

318 (3.0)

332 (3.1)

 Rheumatoid arthritis

460 (1.5)

497 (1.8)

329 (1.7)

297 (1.6)

199 (1.5)

497 (1.8)

161 (1.5)

166 (1. 6)

 Cancer

2525 (8.1)

3320 (12.1)

1921 (10.2)

1711 (9.1)

1377 (10.3)

3320 (12.1)

1151 (10.8)

1139 (10.7)

 Respiratory Disease

1325 (4.3)

1695 (6.2)

1010 (5.4)

933 (4.9)

664 (5.0)

1695 (6.2)

586 (5.5)

572 (5.4)

 Immunosuppresseda

571 (1.8)

616 (2.2)

392 (2.1)

358 (1.9)

239 (1.8)

616 (2.2)

205 (1.9)

198 (1.9)

 Rare metabolic disorder

29 (0.1)

38 (0.1)

23 (0.1)

18 (0.1)

18 (0.1)

38 (0.1)

15 (0.1)

13 (0.1)

Other medications at baseline, n (%)

 Previous prescription of ACE-I

31,194 (100)

6030 (21.9)

18,895 (100)

4462 (23.6)

8421 (63.0)

6030 (21.9)

5686 (53.5)

5638 (53.1)

 Previous prescription of ARB

1036 (3.3)

1907 (6.9)

937 (5.0)

762 (4.0)

13,377 (100)

1907 (6.9)

10,623 (100)

1492 (14.0)

 Previous prescription of CCB

8242 (26.4)

27,500 (100)

5554 (29.4)

18,895 (100)

5393 (40.3)

27,500 (100)

4001 (37.7)

10,623 (100)

 Thiazide diuretics

5775 (18.5)

3919 (14.3)

5775 (18.5)

3919 (14.3)

3457 (25.8)

3919 (14.3)

2074 (19.5)

2468 (23.2)

 Loop diuretics

768 (2.5)

461 (1.7)

768 (2.5)

461 (1.7)

417 (3.1)

461 (1.7)

331 (3.1)

219 (2.1)

 Potassium diuretics

148 (0.5)

101 (0.4)

148 (0.5)

101 (0.4)

85 (0.6)

101 (0.4)

59 (0.6)

69 (0.7)

 Alpha blockers

1017 (3.3)

659 (2.4)

1017 (3.3)

659 (2.4)

661 (4.9)

659 (2.4)

430 (4.1)

481 (4.5)

 Beta blockers

3525 (11.3)

3030 (11.0)

3525 (11.3)

3030 (11.0)

1630 (12.2)

3030 (11.0)

1302 (12.3)

1423 (13.4)

 Other antihypertensive

122 (0.4)

84 (0.3)

122 (0.4)

84 (0.3)

71 (0.5)

84 (0.3)

48 (0. 5)

48 (0.5)

 Anticoagulants

884 (2.8)

889 (3.2)

884 (2.8)

889 (3.2)

446 (3.3)

889 (3.2)

370 (3.5)

385 (3.6)

 Statins

9399 (30.1)

9133 (33.2)

9399 (30.1)

9133 (33.2)

3977 (29.7)

9133 (33.2)

3293 (31.0)

3230 (30.4)

  1. a(Treatment with immunosuppressive therapies/antibody treatment/solid organ transplant/ chemo/radiotherapies)
  2. ACE-I angiotensin converting enzyme inhibitor, ARB angiotensin II receptor blocker, CCB calcium channel blocker