Table 1. Mean and standard deviation of estimates of prevalence and population attributable fraction(PAR) from 500 simulations for different values of the true relative risk (RR) associated with a variant, # of cases = 500 and no population stratification.

DSV	RR()( = )	Prevalence [Mean (SD)]	PAR [Mean(SD)]
10	1	0.050(0.002)	0(0.005)
	2	0.051(0.002)	0.012(0.010)
	3	0.052 (0.003)	0.024 (0.016)
20	1	0.050(0.002)	0(0.007)
	2	0.052(0.003)	0.026(0.015)
	3	0.055(0.003)	0.050(0.023)