Table 7

Effect of providing extensive preliminary information: odds ratio of withdrawal between the two genetic subcohorts

Dependent variable	Independent variables	OR	95%CI
**p<0⋅001 (two tailed).
†Male = 0; female = 1.
‡No = 0, Takashima; yes = 1, Makino.
Withdrawal from basic survey	Gender†	1⋅75	0⋅78 to 3⋅96
	Age (years)	1⋅02	0⋅99 to 1⋅06
	Extensive information‡	0⋅15**	0⋅05 to 0⋅43
Withdrawal from blood sample preservation for future	Gender†	1⋅77	0⋅78 to 4⋅00
use	Age (years)	1⋅02	0⋅99 to 1⋅05
	Extensive information‡	0⋅15**	0⋅05 to 0⋅43
Withdrawal from examination of medical records and	Gender†	1⋅79	0⋅79 to 4⋅03
death certificate	Age (years)	1⋅02	0⋅99 to 1⋅05
	Extensive information‡	0⋅15**	0⋅05 to 0⋅43
Withdrawal from genetic analysis	Gender†	1⋅79	0⋅79 to 4⋅03
	Age (years)	1⋅02	0⋅99 to 1⋅05
	Extensive information‡	0⋅15**	0⋅05 to 0⋅43
Withdrawal from DNA sample preservation for future	Gender†	1⋅78	0⋅79 to 4⋅01
analysis	Age (years)	1⋅02	0⋅99 to 1⋅05
	Extensive information‡	0⋅15**	0⋅05 to 0⋅42