Table 3.

Associations between HCWs’ beliefs and their intentions to vaccinate in cross-sectional studies

Authors	Setting	Study population/response rate	Determinant (belief)	Intention to vaccinate	Measure of association	Adjustments
Zimmerman et al. (2002) [22]	USA	281/72,4% general practitioners, family practice, pediatricians	Perception of: A) Efficacy of the vaccine. yes vs no	Would recommend vaccination	A) To children 12–18 months: 85% vs 70% (p < 0.05)	1A, 1C, 1D, 3E, 1F
					To children 4–6 years: 85% vs 80% (p < 0.05)
					To children 11–12 years: 86% vs 83% (p > 0.05)
			B) Storing the vaccine being a major problem. Yes vs no		B) To children 12-18m: 62% vs 86% (p < 0.05) To Children 4–6 years: 73% vs 85% (p > 0.05) To children 11–12 years: 76% vs 87% (p > 0.05)
Schupfner et al. (2002) [20]	Germany	97/73% pediatricians	Belief that: A) Official vaccination recommendations are influenced by the industry	Reported vaccine coverage rate	A) 60% of those reporting high coverage rate (>80%). 46% of those with low coverage rate (<80%). p > 0.05	2C, 4D, 4E
			B) Behavior in vaccination is mostly conditioned by physician's beliefs		B) 66% of those with high coverage and 59% of those with low coverage. p > 0.05
Davis et al. (2003) [23]	USA	694/60% family physicians	Believe the new 7-valent pneumococcal vaccine will effectively prevent meningitis	Reported habit of recommending the vaccine	OR 1.86 (95% CI 0.93, 3.73) p > 0.05	4E, 1F
Milledge et al. (2003) [24]	Australia	160/67% general practitioners	Agreement that the following are a deterrent to vaccination: A) Cost- to- parent	Would recommend universal varicella vaccination	A) OR 1.54 (95% CI:0.70-3.38) p > 0.05	1B, 1C, 7E, 2F
			B) Another needle		B) OR 0.79 (0.33–1.49) p > 0.05
Jungbauer-Gans et al. (2003) [25]	Germany	136/71% family physicians and pediatricians	Training in alternative medicine	Reported habit of recommending full vaccination	With training 63%, without training 78%. p > 0.05 for the difference	None
		94/71% family physicians and pediatricians	Training in alternative medicine	Record linked vaccine coverage	Beta: -0,121 (p < 0.05)	None
Wilson et al. (2004) [26]	Canada	312/59,4% naturopathic students	Belief that: A) Vaccines are beneficial	Willingness to advise full vaccination	A) OR: 16.4 (95% CI 5.15–73.6) p < 0.05	1D, 5E
			B) Vaccines are risky		B) OR: 0.30 ( 0.11–0.74) p < 0.05
Russell et al. (2004) [27]	Canada	503/78,2% chiropractors	Belief that: A) Vaccines are safe and efficacious	Reported habit of recommending vaccination	A) OR 25.2 [95% CI 8.7-72.7] p < 0.05	2D, 4E
			B) Social orientation of heath		B) OR 2.9 [95% CI 1.7-5.1] p < 0.05
			C) Broad view of chiropractic practice		C) OR 0.6 [95% CI 0.3-1.1] p > 0.05
			D) People are informed		D) OR 1.5 [IC95 % 0.9–2.5] p > 0.05
			E) Chiropractors should recommend vaccination		E) OR 0.9 [IC95 % 0.5–1.4] p > 0.05
			F) I believe in physicians who think I should recommend vaccination		F) OR 1.5 [IC95 % 1.0–2.4] p > 0.05