What is the optimal recall period for verbal autopsies? Validation study based on repeat interviews in three populations

Table 7 Post estimation predicted correct assignment by time while holding all other covariates at their mean

Regression 1		Regression 2		Regression 3
	Predicted correct assignment and (95% CI) ^a		Predicted correct assignment and (95% CI) ^a		Predicted correct assignment and (95% CI) ^a
Recall period 0–2 months	0.503 (0.480, 0.526)	Recall period 0 months	0.518 (0.479, 0.558)	Recall period 0–2 months	0.503 (0.480, 0.526)
Recall period 3–11 months	0.483 (0.456, 0.510)	Recall period 6 months	0.501 (0.479, 0.524)	Recall period ≥ 3 months	0.482 (0.461, 0.503)
Recall period ≥ 12 months	0.481 (0.449, 0.514)	Recall period 12 months	0.484 (0.463, 0.505)
		Recall period 18 months	0.467 (0.431, 0.504)
		Recall period 24 months	0.450 (0.394, 0.507)
		Recall period 30 months	0.434 (0.356, 0.511)
		Recall period 36 months	0.417 (0.319, 0.514)

^a Predicted probabilities of correct assignment estimated from the logistic regression models including as covariates recall period, study site, and age module

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