Table 4.

Factors associated with COVID-19 among the contacts of Tamil Nadu, India, March–May 2020

Risk factors	Crude RR (95% CI)	RR with age-adjusted (95% CI)	RR with age and sex adjusted (95% CI)
Community contacts of non-congregation primary cases	Ref.	Ref.	Ref.
Community contact of congregation primary cases	1.0 (0.7 to 1.5)	0.9 (0.6 to 1.4)	0.9 (0.6 to 1.4)
Household contacts of non-congregation primary cases	4.9 (3.8 to 6.4)	4.7 (3.7 to 6.2)	4.7 (36.4 to 6.1)
Household contacts of congregation primary cases	16.4 (13.3 to 20.2)	16.2 (13.1 to 20.0)	16.1 (13.0 to 20.0)

RR, relative risk.