Table 2. Response and participation rates among residents of Nabeshima who did or did not receive a reminder.

Variable	Invited subjects	Respondents No. (%)	Odds ratio (95% CI)	Participants No. (%)	Odds ratio (95% CI)
Total	5139	2174 (42.3)		970 (18.9)
Reminder (−)a	2204	689 (31.3)	1 (reference)	365 (16.6)	1 (reference)
Reminder (+)	2935	1458 (50.6)	2.17 (1.93–2.44)	605 (20.6)	1.31 (1.13–1.51)

^aReminders could not be sent to these subjects, due to a complaint from a resident, as described in the Methods.

CI: confidence interval.