Table 2.

Reconstructing the Population

			O
			+	−	Total	Risk	RR
A	rNC
	E	+	1 × 40.67 = 40.67	110 × 40.67 = 4473.33	4514	0.013	1.9
		−	11 × 40.67 = 447.33	2278 × 40.67 = 92 639.67	93 086	0.005
B	Reconstructed populationa
	E	+	40.67 + 25 = 65.67	4473.33 + 475 = 4948.33	5014	0.013	2.5
		−	447.33 + 43 = 490.33	92639.67 + 1857 = 94 496.67	94 986	0.005

Two-by-two tables showing distributions of exposure, outcome, and disease that defines case status in the reconstructed noncases and in the reconstructed source population.

Abbreviations: D, case-defining illness; E, exposure; O, outcome; rNC, reconstructed noncases; RR, relative risk.

^a rNC + cohort of cases.