Table 1. Characteristics of the 9,085 sample participants. Brazilian Longitudinal Study of Aging (ELSI-Brazil), 2015-2016.

Characteristic	Total	North	Northeast	Southeast	South	Midwest	p
	n = 9,085	n = 713	n = 2,416	n = 3,825	n = 1,234	n = 897
Gender: female (%)	53.9	49.9	54.6	54.5	53.6	52.1	0.934
Age – average (SE)	63.0 (0.42)	62.1 (0.67)	63.3 (0.75)	63.0 (0.72)	63.0 (0.92)	62.3 (1.1)	0.945
Education (years) (%)							< 0.0001
> 11	23.8	26.3	18.3	26.3	24.2	23.7
8–10	11.9	15.6	8.9	12.9	12.2	11.3
4–7	31.4	25.4	23.2	34.4	36.9	31.8
< 4	32.8	32.7	49.5	26.4	26.7	33.2
Place of residence: Rural (%)	15.3	17.7	30.3	6.5	21.6	5.6	0.006
Memory - mean (SE)
Immediate	4.3 (0.05)	4.2 (0.11)	3.8 (0.08)	4.5 (0.06)	4.6 (0.07)	4.3 (0.07)	< 0.0001
Late	2.9 (0.06)	2.7 (0.15)	2.4 (0.09)	3.0 (0.07)	3.0 (0.09)	3.1 (0.13)	< 0.0001
Combined	7.3 (0.10)	7.0 (0.24)	6.2 (0.17)	7.5 (0.13)	7.7 (0.16)	7.6 (0.19)	< 0.0001
Verbal fluency - mean (SE)	12.6 (0.29)	11.4 (0.37)	11.4 (0.85)	13.2 (0.41)	12.6 (0.40)	12.9 (0.38)	0.012

All estimates were weighted by the sample parameters and sample weights of the subjects.

SE: standard error. For continuous and categorical variables, F tests were used, and the weighted chi-square, corrected for the study design, was used as a complex sample.