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

Table 4.

Percentage Distribution of Discrepancies Between Age Based on Census Record and Age at Interview,a LLFS Siblings, and Probands (N = 1,005)

Census-based age − Age based on reported birth date
Age at interviewa −2+ −1 0 1 2+ N
<80 0.0 0.0 89.3 7.1 3.6  28
80–84 0.8 1.7 92.4 5.1 0.0  118
85–89 0.5 1.0 88.4 10.1 0.5  207
90–94 0.0 2.4 89.5 7.8 0.2  411
95–99 1.5 4.4 85.4 8.8 0.0  205
100 and more 0.0 0.0 88.4 7.0 4.7  43
Total 0.4 2.3 88.7 8.1 0.5 1,012

Notes: aAge at interview based on reported date of birth and date of interview. Percentages may not add up to 100 due to rounding. A positive difference indicates age understatement at the time of the interview based on the reported birth date compared with census-based age, whereas negative values indicate age overstatement.