Table 5

Characteristics of sharp and fuzzy matches*

DROS–SVRD linkageMortality–SVRD linkage
Matches identified in step AMatches identified in step B, C or DMatches identified in step AMatches identified in step B, C or D
Male (%)86.0585.4551.9648.81
Age†
 Mean (years)45387373
 Median (years)45357677
Race/ethnicity
 White (%)74.5269.3370.7366.33
 Hispanic (%)13.1815.7613.3014.41
 Black (%)3.785.798.3411.82
 Asian (%)5.735.807.006.55
 Other (%)2.793.320.630.90
Residential location‡
 Urban (%)81.9681.1687.8087.41
 Suburban (%)12.2210.956.946.10
 Large rural town (%)3.113.463.112.64
 Small rural town (%)2.282.481.612.37
  • *In both linkages, all variables in the step A match are significantly different (p<0.01) from step B/C/D matches.

  • †Refers to cohort members’ age at the midpoint of their observation period.

  • ‡Categories are based on the US Census Bureau’s urban-rural classification system and refer to cohort members’ residential location at time they entered the cohort.

  • DROS, Dealer Record of Sale database; SVRD, Statewide Voter Registration Database.