Table 1.

Proportion of subjects with increased risk for COVID-19 severity.

Group	n	Proportion of subjects with high number of risk alleles (%)
Russian cohorts
Russian long-distance athletes	90	48.9
Russian middle-distance athletes	126	58.7*
Russian combat athletes	96	59.4*
Russian power athletes	228	61.0*
Russian team sport players	262	63.0*
Russian controls	224	47.3
Other populations
Americans (African ancestry)	61	68.9
Americans (European ancestry)	99	59.6
Bangladesh	86	59.3
Barbados	96	82.3
British	91	53.8
Chinese	301	28.6
Colombian	94	54.3
Finnish	99	60.6
Gambian	113	80.5
Indian	205	56.6
Italian	107	71.0
Japanese	104	41.3
Kenyan	99	81.8
Mexican	64	45.3
Nigerian	207	82.1
Pakistani	96	56.3
Peruvian	85	52.9
Puerto Rican	104	53.8
Sierra Leone	85	89.4
Spanish	107	59.8
Sri Lankan	102	51.0
Vietnamese	99	38.4

^⁎p <0.05, statistically significant differences between Russian athletes and controls.

Abbreviation: COVID-19 = coronavirus disease-2019.