. 2020 Sep 25;22(9):e16373. doi: 10.2196/16373

Table 2.

Likelihood of receiving an early-season influenza vaccination.

Recipients	n	Unadjusted		Adjusted^a
		OR^b	95% CI	OR	95% CI
Portal message^c	39,011	1.07	(1.02, 1.12)	1.07	(1.02, 1.12)
Interactive voice response call^c	58,596	1.03	(0.96, 1.10)	1.03	(0.96, 1.11)

^aAdjusted for age, sex, race, and health care utilization level (where utilization was defined as office visit, phone encounter, consult, or complete physical exam within the 12 months prior to randomization).

^bOR: odds ratio.

^cThe reference is usual care.