. Author manuscript; available in PMC: 2009 Mar 1.

Published in final edited form as: Alzheimers Dement. 2008 Mar;4(2):134–144. doi: 10.1016/j.jalz.2008.01.001

Table 2.

Cognitive Function at Baseline, 1993 and 2002 Cohorts

Cognitive Function	1993 (N=7,393)	2002^* (N=7,083)
Normal	6,354 (87.8)	6,413 (91.3)
Mild Cognitive Impairment	440 (5.2)	257 (3.5)
Moderate / Severe Cog Impairment	599 (7.0)	413 (5.2)

Values in parentheses are weighted percentages derived using the HRS respondent population weights to adjust for the complex sampling design of the HRS survey.

Cognitive function data were missing for 13 respondents in 1993 and 21 respondents in 2002. These respondents were excluded from this analysis.

P<.001 for differences in weighted percentages across study years.