Table 3.

Odds of completing the survey for the different pilot conditions and various sociodemographic factors.

Variables in multivariate model	ORa (95%CI)	P value
Email + letter (vs short email only)	1.51 (0.81-2.82)	.20
Email + letter + gift (vs short email only)	2.29 (1.27-4.13)	.01
Email + postcard (vs short email only)	1.02 (0.53-1.99)	.95
Email + gift card (vs short email only)	2.03 (1.11-3.71)	.02
Email + letter + gift card (vs short email only)	2.83 (1.59-5.06)	<.001
Email + postcard + gift card (vs short email only)	2.55 (1.42-4.58)	.002
Previous consent to biobanking study (vs not consented)	2.15 (1.59-2.93)	.006
Area Deprivation Index decile (6-10 vs 1-5)	0.65 (0.48-0.88)	.01
Cancer status (invasive vs benign/in situ/no cancer)	1.04 (0.71-1.53)	.84
Age (per 10 years)	1.13 (0.99-1.29)	.08
Non-White (vs White/missing)	0.68 (0.45-1.04)	.08
Hispanic (vs non-Hispanic/missing)	1.11 (0.74-1.68)	.60
Years since last visit to Moffitt (2-5 vs <2)	0.52 (0.36-0.73)	<.001
Female (vs male)	1.33 (0.98-1.81)	.06

^aOR: odds ratio.