Table 2.
Fatality statistics for all risk factors.
| Risk factor | Total papers (N) | Studies on fatality (n) | Studies with significant fatality value, n (%)a |
| Age | 33 | 19 | 16 (84) |
| Asthma | 6 | 4 | 2 (50) |
| Autoimmune disorders | 3 | 3 | 2 (67) |
| Cancer | 26 | 13 | 6 (46) |
| Cardiovascular and cerebrovascular disease | 10 | 3 | 2 (67) |
| Cerebrovascular disease | 20 | 14 | 10 (71) |
| Chronic digestive disorders | 5 | 2 | 0 (0) |
| Chronic kidney disease | 38 | 23 | 14 (61) |
| Chronic liver disease | 12 | 5 | 3 (60) |
| Chronic respiratory diseases | 29 | 19 | 13 (68) |
| Chronic obstructive pulmonary disease | 41 | 19 | 8 (42) |
| Dementia | 5 | 4 | 4 (100) |
| Diabetes | 100 | 46 | 26 (57) |
| Drinking | 1 | 0 | N/Ab |
| Endocrine diseases | 4 | 0 | N/A |
| Ethnicity: Hispanic versus non-Hispanic | 15 | 11 | 6 (55) |
| Heart disease | 98 | 51 | 43 (84) |
| Heart failure | 17 | 14 | 9 (64) |
| Hypertension | 100 | 43 | 21 (49) |
| Immune system disorders | 6 | 4 | 4 (100) |
| Male gender | 100 | 39 | 20 (51) |
| Neurological disorders | 6 | 3 | 3 (100) |
| Overweight or obese | 43 | 20 | 12 (60) |
| Race: Asian versus White | 5 | 4 | 3 (75) |
| Race: Black versus White | 21 | 17 | 7 (41) |
| Race: Other versus White | 9 | 9 | 3 (33) |
| Respiratory system diseases | 7 | 2 | 2 (100) |
| Smoking status | 56 | 26 | 5 (19) |
aThe proportion of studies showing significant fatality was calculated from the number of studies showing fatality of COVID-19 in people with the particular risk factor.
bN/A: not applicable.