Table 1

Baseline demographic characteristics of the original population, the population included in the analyses, the participants, and the group of elderly without information

Residents

Individuals with information

Participants

Individuals without information


All, n

2,430

2,139

1,842

291

Men, n (%)

634 (26.1%)

553 (25.9%)

469 (25.5%)

81 (27.8%)

Women, n (%)

1,796 (73.9%)

1,586 (74.1%)

1,373 (74.5%)

210 (72.2%)

Mean age of men at interview (SD), years

86.9 (4.6) 1

87.2 (4.5)

Mean age of women at interview (SD), years

88.3 (4.8) 1

88.7 (4.7)

Mean age at interview, all (SD), years

88.0 (4.8) 1

88.4 (4.7)

Mean age at prevalence day, all (SD), years

87.2 (4.9)

87.3 (5.0)

87.6 (4.9)

86.3 (4.9) 2

Died in the year following interview, 3 %

12.8%

n.a. 4

12.8%

n.a. 4


1 At prevalence day for the individuals without interview; 2 Approximate estimates of the SD; 3 After prevalence day for those without interview; 4 The death rate was 12.9% in the 588 individuals without interview (297 with and 291 without information).

Lucca et al. BMC Neurology 2011 11:54   doi:10.1186/1471-2377-11-54

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