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Table 1 Composition of the four waves samples of the SABE study

From: Changes in prevalence of cognitive impairment and associated risk factors 2000–2015 in São Paulo, Brazil

Waves

2000

2006

(n = 1413)

2010

(n = 1346)

2015

(n = 1224)

(n = 2143)

Re-assessed

(n = 1115)

Re-assessed (n = 990)

(Wave 2000 = 748)

(Wave 2006 = 242)

Re-assessed (n = 838)

(Wave 2000 = 382)

(Wave 2006 = 186)

(Wave 2010 = 270)

Deaths (n = 491, 22.9%)

Deaths (n = 169, 11.9%)

Deaths (n = 308, 22.9%)

Refusal/not located or institutionalized

(n = 537, 25.1%)

Refusal/not located or institutionalized

(n = 254, 18%)

Refusal/not located or institutionalized

(n = 200, 14.8%)

New participants

(n = 298)

New participants

(n = 356)

New participants

(n = 386)