Table 2.

Association Between School Characteristics and Schools Requiring ACIP-Recommended Evidence of Immunity

	Requiring ≥1 ACIP Recommended Forms of Evidence versus Requiring ≥1 Non-ACIP-Recommended Forms of Evidence of Immunitya
	Measles, Mumps, and Rubella, n =1,823			Hepatitis B, n= 1,767			Varicella, n= 1,555			Pertussis, n =1,006			Influenza, n =634
School characteristics	OR	95% CI	P	OR	95% CI	P	OR	95% CI	P	OR	95% CI	P	OR	95% CI	P
Years required for program completion			.02b			.04b			.11			.06			.70
≤1 yr	0.6	0.4–0.9	.02b	0.7	0.5–0.9	.01b	0.8	0.6–1.1	.20	0.9	0.6–1.2	.41	0.9	0.6–1.4	.64
≥3 yr	1.2	0.7–1.9	.52	0.9	0.6–1.2	.29	1.3	0.9–1.8	.20	1.4	1.0–1.9	.06	1.2	0.7–1.9	.56
2 yr (referent)	1.0	...	...	1.0	...	...	1.0	...	...	1.0	...	...	1.0	...	...
Type of school
Public	1.5	1.0–2.2	.03b	1.2	0.9–1.6	.18	1.0	0.7–1.3	.79	1.3	0.9–1.8	.10	1.6	1.1–2.4	.03b
Private (referent)	1.0	...		1.0	...		1.0	...	...	1.0	...	...	1.0	...	...
Influences on school’s vaccination requirements, yes vs no (referent)
ACIP/CDC Recommendations for HCP	1.0	0.7–1.4	.84	1.5	1.2–1.9	<.01b	1.0	0.7–1.3	.71	1.4	1.1–1.9	.01b	1.6	1.1–2.3	.02b
ACIP Recommendations for Adults	1.6	0.9–2.6	.07	0.8	0.5–1.1	.18	0.8	0.5–1.2	.22	0.8	0.5–1.2	.23	0.7	0.4–1.2	.15

NOTE. ACIP, Advisory Committee on Immunization Practices; OR, odds ratio; CI, confidence interval; CDC, Centers for Disease Control; HCP, healthcare personnel; JCAHO, Joint Commission on Accreditation of Healthcare Organizations.

^aAdditional variables controlled for in the regressions include history of infection/disease outbreak, JCAHO, policies of institutions where students perform clinical rotations, American College Health Association, school dean, Occupational Safety and Health Administration, health profession organization, and state laws.

^bStatistically significant at α<0.05.