title: Estimation of nationwide vaccination coverage and comparison of interview and telephone survey methodology for estimating vaccination status.
abstract: This study compared interview and telephone surveys to select the better method for regularly estimating nationwide vaccination coverage rates in Korea. Interview surveys using multi-stage cluster sampling and telephone surveys using stratified random sampling were conducted. Nationwide coverage rates were estimated in subjects with vaccination cards in the interview survey. The interview survey relative to the telephone survey showed a higher response rate, lower missing rate, higher validity and a less difference in vaccination coverage rates between card owners and non-owners. Primary vaccination coverage rate was greater than 90% except for the fourth dose of DTaP (diphtheria/tetanus/pertussis), the third dose of polio, and the third dose of Japanese B encephalitis (JBE). The DTaP4: Polio3: MMR1 fully vaccination rate was 62.0% and BCG1:HepB3:DTaP4:Polio3:MMR1 was 59.5%. For age-appropriate vaccination, the coverage rate was 50%-80%. We concluded that the interview survey was better than the telephone survey. These results can be applied to countries with incomplete registry and decreasing rates of landline telephone coverage due to increased cell phone usage and countries. Among mandatory vaccines, efforts to increase vaccination rate for the fourth dose of DTaP, the third dose of polio, JBE and regular vaccinations at recommended periods should be conducted in Korea.
authors.affiliation: Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, Korea.
authors.forename: Boyoung
authors.initials: B
authors.lastname: Park
authors.forename: Yeon-Kyeng
authors.initials: YK
authors.lastname: Lee
authors.forename: Lisa Y
authors.initials: LY
authors.lastname: Cho
authors.forename: Un Yeong
authors.initials: UY
authors.lastname: Go
authors.forename: Jae Jeong
authors.initials: JJ
authors.lastname: Yang
authors.forename: Seung Hyun
authors.initials: SH
authors.lastname: Ma
authors.forename: Bo-Youl
authors.initials: BY
authors.lastname: Choi
authors.forename: Moo-Sik
authors.initials: MS
authors.lastname: Lee
authors.forename: Jin-Seok
authors.initials: JS
authors.lastname: Lee
authors.forename: Eun Hwa
authors.initials: EH
authors.lastname: Choi
authors.forename: Hoan Jong
authors.initials: HJ
authors.lastname: Lee
authors.forename: Sue K
authors.initials: SK
authors.lastname: Park
mesh_terms: D000328:Adult; D002675:Child, Preschool; D003625:Data Collection; D005260:Female; D019538:Health Care Surveys; D006801:Humans; D007223:Infant; D007407:Interviews as Topic; D008297:Male; D009035:Mothers; D014611:Vaccination / Q000706:statistics & numerical data*