Matthew F Daley1, Jo Ann Shoup2, Sophia R Newcomer2, Michael L Jackson3, Holly C Groom4, Steven J Jacobsen5, Huong Q McLean6, Nicola P Klein7, Eric S Weintraub8, Michael M McNeil8, Jason M Glanz2. 1. Institute for Health Research, Kaiser Permanente Colorado, Aurora, Colo; Department of Pediatrics, University of Colorado School of Medicine, Aurora, Colo. Electronic address: matthew.f.daley@kp.org. 2. Institute for Health Research, Kaiser Permanente Colorado, Aurora, Colo. 3. Kaiser Permanente Washington Health Research Institute, Seattle, Wash. 4. Kaiser Permanente Northwest, Portland, Ore. 5. Kaiser Permanente Southern California, Pasadena, Calif. 6. Marshfield Clinic Research Institute, Marshfield, Wisc. 7. Kaiser Permanente Northern California, Oakland, Calif. 8. Immunization Safety Office, Division of Healthcare Quality Promotion, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Ga.
Abstract
OBJECTIVES: Some parents are concerned the childhood immunization schedule could increase risk for allergic disorders, including asthma. To inform future safety studies of this speculated association, a parent survey was conducted to examine the risk of misclassification of vaccination status in electronic health record data, and to assess the potential for confounding if asthma risk factors varied by vaccination status. METHODS: A survey was conducted among parents of children 19 to 35 months old at 6 medical organizations within the Vaccine Safety Datalink. Parents of children in 4 vaccination groups were surveyed: 1) no vaccines by 12 months of age and a diagnosis of parental vaccine refusal; 2) consistent vaccine limiting (≤2 vaccines per visit); 3) not consistently vaccine limiting but otherwise undervaccinated with a vaccine refusal diagnosis; and 4) fully vaccinated with no delays and no vaccine refusal. Parents were surveyed about their child's vaccination status and whether asthma risk factors existed. RESULTS: Among a survey sample of 2043 parents, 1209 responded (59.2%). For receiving no vaccines, the observed agreement between parent report and electronic health record data was 94.0% (κ = 0.79); for receiving all vaccines with no delays, the observed agreement was 87.3% (κ = 0.73). Although most asthma risk factors (allergic rhinitis, eczema, food allergies, family asthma history) reported by parents did not differ significantly between children in the vaccination groups studied, several factors (aeroallergen sensitivity, breastfeeding) differed significantly between groups. CONCLUSIONS: Measurement and control of disease risk factors should be carefully considered in observational studies of the safety of the immunization schedule.
OBJECTIVES: Some parents are concerned the childhood immunization schedule could increase risk for allergic disorders, including asthma. To inform future safety studies of this speculated association, a parent survey was conducted to examine the risk of misclassification of vaccination status in electronic health record data, and to assess the potential for confounding if asthma risk factors varied by vaccination status. METHODS: A survey was conducted among parents of children 19 to 35 months old at 6 medical organizations within the Vaccine Safety Datalink. Parents of children in 4 vaccination groups were surveyed: 1) no vaccines by 12 months of age and a diagnosis of parental vaccine refusal; 2) consistent vaccine limiting (≤2 vaccines per visit); 3) not consistently vaccine limiting but otherwise undervaccinated with a vaccine refusal diagnosis; and 4) fully vaccinated with no delays and no vaccine refusal. Parents were surveyed about their child's vaccination status and whether asthma risk factors existed. RESULTS: Among a survey sample of 2043 parents, 1209 responded (59.2%). For receiving no vaccines, the observed agreement between parent report and electronic health record data was 94.0% (κ = 0.79); for receiving all vaccines with no delays, the observed agreement was 87.3% (κ = 0.73). Although most asthma risk factors (allergic rhinitis, eczema, food allergies, family asthma history) reported by parents did not differ significantly between children in the vaccination groups studied, several factors (aeroallergen sensitivity, breastfeeding) differed significantly between groups. CONCLUSIONS: Measurement and control of disease risk factors should be carefully considered in observational studies of the safety of the immunization schedule.
Authors: Jason M Glanz; Sophia R Newcomer; Michael L Jackson; Saad B Omer; Robert A Bednarczyk; Jo Ann Shoup; Frank DeStefano; Matthew F Daley Journal: Vaccine Date: 2016-02-15 Impact factor: 3.641
Authors: Tracy A Lieu; Brian J Zikmund-Fisher; Cathy Chou; G Thomas Ray; Eve Wittenberg Journal: Clin Pediatr (Phila) Date: 2016-07-20 Impact factor: 1.168
Authors: Lakshmi Sukumaran; Natalie L McCarthy; Rongxia Li; Eric S Weintraub; Steven J Jacobsen; Simon J Hambidge; Lisa A Jackson; Allison L Naleway; Berwick Chan; Biwen Tao; Julianne Gee Journal: Vaccine Date: 2015-07-23 Impact factor: 3.641
Authors: Michael M McNeil; Julianne Gee; Eric S Weintraub; Edward A Belongia; Grace M Lee; Jason M Glanz; James D Nordin; Nicola P Klein; Roger Baxter; Allison L Naleway; Lisa A Jackson; Saad B Omer; Steven J Jacobsen; Frank DeStefano Journal: Vaccine Date: 2014-08-06 Impact factor: 3.641
Authors: Jason M Glanz; Christina L Clarke; Stanley Xu; Matthew F Daley; Jo Ann Shoup; Emily B Schroeder; Bruno J Lewin; David L McClure; Elyse Kharbanda; Nicola P Klein; Frank DeStefano Journal: JAMA Pediatr Date: 2020-05-01 Impact factor: 16.193
Authors: Matthew F Daley; Liza M Reifler; Jo Ann Shoup; Komal J Narwaney; Elyse O Kharbanda; Holly C Groom; Michael L Jackson; Steven J Jacobsen; Huong Q McLean; Nicola P Klein; Joshua T B Williams; Eric S Weintraub; Michael M McNeil; Jason M Glanz Journal: Am J Prev Med Date: 2021-04-30 Impact factor: 5.043