Estimation of measles vaccination coverage using the Lot Quality Assurance Sampling (LQAS) method -- Tamilnadu, India, 2002-2003.
Introduction: As part of the global strategic plan to reduce the number of measles deaths in India, the state of Tamilnadu aims at >95% measles vaccination coverage. A study was conducted to measure overall coverage levels for the Poondi Primary Health Center (PPHC), a rural health-care facility in...
| Publicado en: | MMWR: Morbidity & Mortality Weekly Report Vol. 55; pp. 16 - 20 |
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| Autores principales: | , , , , |
| Formato: | research tables/charts Journal Article |
| Publicado: |
Centers for Disease Control & Prevention (CDC)
4/29/2006 Supplement
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=106448421&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 106448421 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 01492195 MMW jtl: MMWR: Morbidity & Mortality Weekly Report issn: 01492195 maglogo: N pubinfo: dt: 4/29/2006 Supplement vid: 55 pid: 1493 pub: Centers for Disease Control & Prevention (CDC) place: Atlanta, Georgia artinfo: ui: 106448421 106448421 2009173871 NLM16645577 106448421 ppf: 16 ppct: 4 formats: fmt: @attributes: type: P tig: atl: Estimation of measles vaccination coverage using the Lot Quality Assurance Sampling (LQAS) method -- Tamilnadu, India, 2002-2003. aug: au: Sivasankaran S Manickam P Ramakrishnan R Hutin Y Gupte MD affil: Surveillance Medical Officer, National Polio Surveillance Project, 30 Chellan Nagar, Pondicherry, India 605011; drsrvnndph@yahoo.com sug: subj: Immunization Programs Evaluation Measles Prevention and Control Confidence Intervals Descriptive Statistics Disease Surveillance Epidemiological Research Evaluation Research India Infant Measles Vaccine Administration and Dosage Null Hypothesis Random Sample Human Infant: 1-23 months ab: Introduction: As part of the global strategic plan to reduce the number of measles deaths in India, the state of Tamilnadu aims at >95% measles vaccination coverage. A study was conducted to measure overall coverage levels for the Poondi Primary Health Center (PPHC), a rural health-care facility in Tiruvallur District, and to determine whether any of the PPHC's six health subcenters had coverage levels <95%.Methods: The Lot Quality Assurance Sampling (LQAS) method was used to identify health subcenters in the PPHC area with measles vaccination coverage levels <95% among children aged 12--23 months. Lemeshow and Taber sampling plans were used to determine that the measles vaccination status of 73 children aged 12--23 months had to be assessed in each health subcenter coverage area, with a 5% level of significance and a decision value of two. If more than two children were unvaccinated, the null hypothesis (i.e., that coverage in the health subcenter was low [<95%]) was not rejected. If the number of unvaccinated children was two or fewer, the null hypothesis was rejected, and coverage in the subcenter was considered to be good (i.e., >95%). All data were pooled in a stratified sample to estimate overall total coverage in the PPHC area.Results: For two (33.3%) of the six health subcenters, more than two children were unvaccinated (i.e., coverage was <95%). Combining results from all six health subcenters generated a coverage estimate of 97.7% (95% confidence interval = 95.7--98.8) on the basis of 428 (97.7%) of 438 children identified as vaccinated.Conclusion: LQAS techniques proved useful in identifying small health areas with lower vaccination coverage, which helps to target interventions. Monthly review of vaccination coverage by subcenter and village is recommended to identify pockets of unvaccinated children and to maintain uniform high coverage in the PPHC area. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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