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. 2013 Jun 4;68(4):580–585. doi: 10.1093/geronb/gbt033

Table 2.

Source Document Used to Verify Date of Birth Among Respondents in the Study Sample (N = 1,142)

Source document N %
Birth certificate 243 21.3
Church record/family bible 23 2.0
Driver’s license 667 58.4
Military record 13 1.1
Census record 6 0.5
Passport 110 9.6
No official source/other/missing 80 7.0
Total 1,142 100.0a

Note: aPercent may not add up to 100 due to rounding.