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. Author manuscript; available in PMC: 2020 Jun 1.
Published in final edited form as: Am J Prev Med. 2019 Apr 17;56(6):e177–e183. doi: 10.1016/j.amepre.2019.01.011

Table 2.

Summary Results of Six Models Examining Association of State Laws With Healthcare Personnel Influenza Vaccination, 2015–2016 Influenza Season

Variable All healthcare personnel Employee healthcare personnel
Parameter estimatea p-value Parameter estimate p-value
Assessment law
 Presence of assessment law in state 1.2385 0.6140 2.1382 0.2931
 Number of promotion strategies used 0.5945 <0.0001 0.7639 <0.0001
 Number of delivery methods used 0.3268 0.0281 0.4337 0.0012
 ≥500 bedsb 2.8727 0.0008 1.6418 0.0332
 Presence of other law in statec 3.2928 0.0176 2.1437 0.0619
 Presence of facility-level vaccination requirement 11.3019 <0.0001 12.4528 <0.0001
 Interaction term for state law and facility requirement −7.0984 <0.0001 −6.4029 <0.0001
Offer law
 Presence of offer law in state 4.6785 0.0193 4.2968 0.0081
 Number of promotion strategies used 0.5925 <0.0001 0.7590 <0.0001
 Number of delivery methods used 0.3506 0.0189 0.4499 0.0008
 ≥500 beds 3.0496 0.0004 1.8718 0.0153
 Presence of other law in statec 1.5083 0.1995 1.2450 0.1939
 Presence of facility-level vaccination requirement 10.9336 <0.0001 12.4483 <0.0001
 Interaction term for state law and facility requirement −4.3283 <0.0001 −4.7377 <0.0001
Ensure law
 Presence of ensure law in state 6.4976 0.0727 5.2937 0.0705
 Number of promotion strategies used 0.6547 <0.0001 0.7626 <0.0001
 Number of delivery methods used – n/s 0.4123 0.0020
 ≥500 beds 2.8517 0.0007 1.6028 0.0370
 Presence of other law in statec 1.3361 0.4827 1.1582 0.4547
 Presence of facility-level vaccination requirement 11.1252 <0.0001 12.8249 <0.0001
 Interaction term for state law and facility requirement −8.0189 <0.0001 −8.2749 <0.0001

Notes: Boldface indicates statistical significance (p<0.05).

a

Parameter estimates represent the expected percentage point change in mean vaccination coverage at the hospital given the presence of the covariate examined. For vaccination promotion strategies and delivery methods, estimates represent expected percentage point change in mean vaccination coverage at the hospital for each additional strategy or method used. For “other law”, estimates represent expected percentage point change in mean vaccination coverage at the hospital for each additional law in the state.

b

Referent: Bedsize of <500 beds.

c

Number of healthcare personnel influenza vaccination laws in a state in addition to the primary covariate of interest for a given model (e.g., in the assessment model, “other law” counts offer, ensure, or surgical masking laws in the state).

n/s, non-significant.