. Author manuscript; available in PMC: 2020 Dec 1.

Published in final edited form as: Glob Heart. 2019 Sep 12;14(4):355–365. doi: 10.1016/j.gheart.2019.08.003

TABLE 2.

Sample size calculations

Variable	Assumed SD	ICC	MDD	Sample Size	Adjusted Sample Size	Prevalence in Population (%)	Screening Sample Size
SBP	16	0.004	5	228	326	20	3,258
		0.052	9	126	180		1,800
FBG	26	0.02	12	162	232	13	3,570
		0.07	18	96	138		2,124
Cigarettes/bidis per day	10	0.01	4	150	215	15	2,858
Cigarettes/bidis per day		0.05	6	96	138		1,828

FBG = fasting blood glucose; ICC = intracluster correlation coefficient; MDD = minimum detectable difference; SBP = systolic blood pressure.