At baseline, personality was not assessed for 247 participants and not scored for 51 others who failed a cognitive screen (see Weiss and Costa (27) for a description). We also excluded 13 participants who were ineligible for other reasons, 1 not classified with respect to eligibility, 1 who did not provide information on educational achievement, and 7 for whom self-reported disability was unavailable. Of the remaining 1,124 participants, 227 died between baseline and follow-up, 164 were excluded because they failed the cognitive screen at the 22-month follow-up. In addition, 49 participants were excluded because of invalid personality questionnaires (see Weiss and Costa (27), p. 725 for more details), and 23 were excluded because data on depression were unavailable at baseline (n = 1), 12-month follow-up (n = 17 ), or the 22-month follow-up (n = 5).
