Skip to main content

Table 1 Association in original studies and own calculations of relative risks by COVID-19 outcomes and by risk

From: Effect modification of the association between comorbidities and severe course of COVID-19 disease by age of study participants: a systematic review and meta-analysis

Risk group

Outcome

Number of studies reporting

Reported measure of association (95 %CI)

Number of studies

Calculated RR

Calculated relative risk ranges (95 %CI)

Pooled analysis RR (95% CI)

Comorbidities

Asthma

Death

  

1

0.9 (0.3–2.4)

0.9 (0.3–2.4)

Hospitalisation

  

2

1.2 (0.6–2.5)–1.3 (0.5–3.6)

1.2 (0.7–2.2)

ICU admission

1

 

1

1.1 (0.7–1.6)

1.1 (0.7–1.6)

Cancer

Death

1

RR: 2.9 (1.3–6.4)

7

0.7 (0.1–4.9)–4.8 (1.1–21.5)

2.0 (1.4–2.8)

Hospitalisation

  

12

0.8 (0.1–4.4)–4.4 (1.0–19.5)

1.5 (1.2–1.8)

ICU admission

1

OR: 5.4 (1.8–16.2)

5

1.4 (0.7–3.0)–4.9 (2.7–9.0)

2.3 (1.3–4.0)

Cardiovascular disease

Death

4

RR: 6.8 (5.4–8.4)

15

1.3 (0.2–8.9)–6.7 (5.4–8.4)

3.3 (2.3–4.5)

OR: 1.2 (0.2–7.8) -2.1 (0.3–17.8)

HR: 1.9 (1.1–3.3)

Hospitalisation

2

OR: 2.4 (1.5–3.9)

23

0.7 (0.1–3.9)–3.9 (1.7–8.8)

2.0 (1.6–2.4)

HR: 0.6 (0.1–3.6)

Composite

  

1

1.6 (0.8–3.1)

1.6 (0.8–3.1)

ICU admission

  

8

0.9 (0.4–2.1)–4.1 (3.4–4.9)

2.1 (1.3–3.2)

Cerebrovascular disease

Death

1

HR: 1.4 (0.7–2.9)

7

1.2 (0.3–4.3)–7.1 (3.3–15.4)

2.6 (1.7–4.1)

Hospitalisation

  

6

1.1 (0.7–2.0)–3.4 (2.3–5.1)

2.2 (1.5–3.3)

Composite

  

1

4.6 (1.9–11.0)

4.6 (1.9–11.0)

ICU admission

  

4

0.8 (0.5–1.3)–3.7 (2.4–5.8)

1.9 (0.9-4.0)

Chronic obstructive pulmonary disease (COPD)

Death

2

OR: 5.4 (0.9–30.4)

6

1.9 (0.4–10.1)–6.0 (1.3–26.8)

2.4 (2.0–3.0)

HR: 2.2 (1.1–4.5)

Hospitalisation

  

11

1.2 (0.9–1.7)–4.3 (0.8–17.1)

2.0 (1.5–2.6)

Composite

  

1

0.9 (0.2–5.0)

0.9 (0.2–5.0)

ICU admission

  

4

1.0 (0.4–2.8)–10.6 (6.2–16.1)

2.4 (0.6–9.8)

Chronic renal failure

Death

  

3

1.9 (0.4–10.1)–2.6 (1.8–3.6)

2.5 (1.8–3.4)

Hospitalisation

  

9

0.8 (0.3–2.5)–3.3 (2.8–3.9)

1.6 (1.0–2.6)

ICU admission

  

4

0.8 (0.4–1.9)–4.6 (3.6–5.8)

2.1 (0.9–4.9)

Diabetes mellitus

Death

5

RR: 4.5 (3.5–5.6)

18

1.1 (0.6–1.9)–4.5 (1.9–10.6)

2.2 (1.7–2.9)

OR: 2.9 (1.4–6.1)–4.9 (1.3–18.2)

HR: 1.1 (0.6–2.1)–1.7 (0.3–8.2)

 

Hospitalisation

4

OR: 0.7 (0.1–8.3)–OR: 4.7 (0.7–32.4)

HR: 1.6 (1.0–2.4)–HR: 1.7 (0.3–8.2)

30

0.7 (0.2–2.4)–4.3 (2.4–7.7)

1.8 (1.5–2.2)

Composite

  

1

1.4 (0.7–2.8)

1.4 (0.7–2.8)

ICU admission

3

OR: 1.6 (0.4–5.8)–2.1 (0.7–6.2)

12

0.3 (0.1–2.3)–4.6 (2.8–7.5)

1.9 (1.4–2.6)

HR: 2.3 (1.4–4.1)

Diseases of liver

Death

  

3

0.9 (0.1–5.9)–4.8 (1.1–21.5)

1.9 (0.6–6.4)

Hospitalisation

  

10

0.8 (0.1–4.3)–11.3 (4.6–27.6)

1.7 (1.0–2.9)

Diseases of the digestive system

Death

  

1

0.8 (0.1–6.1)

0.8 (0.1–6.1)

Hospitalisation

  

3

0.7 (0.2–2.2)–2.0 (0.7–5.2)

1.2 (0.9–1.5)

ICU admission

  

1

0. 8 (0.4–1.5)

0.8 (0.4–1.5)

Endocrine diseases

Death

  

1

1.2 (0.4–3.9)

1.2 (0.4–3.9)

Hospitalisation

  

1

1.4 (1.2–1.5)

1.4 (1.2–1.5)

Hypertension

Death

6

RR: 4.5 (3.7–5.5)

17

1.1 (0.2–6.4)–8.1 (2.9–22.3)

2.7 (2.1–3.4)

OR: 1.1 (0.3–4.6)–3.1 (1.6–5.9)

HR: 1.5 (0.9–2.4)–1.7 (0.9–3.1)

Hospitalisation

5

OR 2.7 (1.3–5.6)–4.4 (1.0–18.9)

29

0.8 (0.3–1.9)–4.4 (2.6–7.4)

1.8 (1.6–2.1)

HR: 1.6 (0.4–5.8)–HR: 1.6 (1.1–2.3)

Composite

  

2

1.3 (0.7–2.4)–3.2 (2.0–5.1)

2.1 (0.9–4.9)

ICU admission

3

OR: 0.5 (0.1–1.7)–2.3 (0.9–5.8)

9

0.9 (0.6–1.3)–3.1 (1.8–5.4)

1.4 (1.1–1.7)

HR:1.8 (1.1–2.9)

Immunocompromised condition

Hospitalisation

  

1

1.7 (1.4–2.1)

1.7 (1.4–2.1)

ICU admission

  

1

2.6 (1.9–3.5)

2.6 (1.9–3.5)

Mycobacterial diseases

Hospitalisation

  

1

0.9 (0.4–1.9)

0.9 (0.4–1.9)

Other diseases or unspecified

Death

1

OR: 1.5 (1.0–2.2)

2

1.6 (1.1–2.4)–1.9 (0.9–4.3)

1.7 (1.2–2.4)

Hospitalisation

2

OR: 2.8 (0.8–10.1)

6

0.9 (0.3–2.7)–6.0 (3.5–10.4)

2.9 (1.6–5.1)

HR: 3.9 (1.9–7.9)

ICU admission

  

1

2.5 (1.3–4.9)

2.5 (1.3–4.9)

Other respiratory diseases

Death

  

7

0.8 (0.3–2.2)–3.4 (2.4–4.9)

2.2 (1.5–3.0)

Hospitalisation

  

7

0.9 (0.5–1.7)–2.9 (1.0–8.2)

1.4 (1.1–1.8)

ICU admission

  

3

0.4 (0.2–1.1)–2.6 (2.1–3.2)

1.3 (0.6–2.9)

Demographic, behavioural, and occupational factors

Healthcare profession

Death

  

2

0.1 (0.0–0.8)–0.1 (0.1–0.3)

0.1 (0.1–0.3)

Hospitalisation

  

3

0.1 (0.0–0.3)–0.8 (0.3–2.2)

0.3 (0.1–0.9)

Male sex

Death

4

RR: 1.7 (1.5–1.9)

19

0.7 (0.1–7.5)–4.7 (1.4–15.1)

1.4 (1.3–1.6)

OR: 1.5 (1.1–1.9)–7.2 (1.3–40.2)

HR: 0.6 (0.3–1.1)

Hospitalisation

5

OR: 1.5 (0.6–3.6)–4.4 (1.0–18.9)

36

0.8 (0.4–1.3)–3.5 (1.7–7.1)

1.3 (1.2–1.5)

HR: 0.9 (0.9–0.9)–1.7 (1.1–2.8)

Composite

1

OR: 1.9 (0.5–7.2)

2

1.5 (0.8–2.8)–1.8 (0.6–5.5)

1.6 (0.9–2.7)

ICU admission

3

OR: 1.1 (0.3–3.4)–2.8 (1.0–7.9)

11

0.7 (0.3–1.6)–2.0 (0.5–77)

1.3 (1.1–1.4)

HR: 1.5 (0.9–2.4)

Obesity

Hospitalisation

1

OR: 6.3 (1.2–34.5)

2

2.1 (1.1–4.2)–4.0 (1.0–15.6)

2.4 (1.3–4.4)

ICU admission

1

OR: 5.4 (1.1–25.6)–9.9 (1.4–71.7)

2

1.4 (1.0–1.8)–1.5 (0.9–2.3)

1.4 (1.1–1.8)

Smoking

Death

1

OR: 2.2 (0.7–7.6)

4

1.2 (0.8–1.7)–8.7 (3.7–20.1)

2.6 (1.0–6.8)

Hospitalisation

1

OR 14.3 (1.6–25.0)

17

0.4 (0.1–2.3)–5.5 (2.1–14.4)

1.5 (1.2–1.9)

ICU admission

  

5

0.9 (0.5–1.8)–2.9 (1.8–4.8)

1.8 (1.1–2.9)

  1. National primary care electronic health record data linked to in-hospital COVID-19 death data