PMID- 16645577
OWN - NLM
STAT- MEDLINE
DCOM- 20060501
LR  - 20191210
IS  - 2380-8942 (Electronic)
IS  - 2380-8942 (Linking)
VI  - 55
IP  - 1
DP  - 2006 Apr 28
TI  - Estimation of measles vaccination coverage using the Lot Quality Assurance 
      Sampling (LQAS) method--Tamilnadu, India, 2002-2003.
PG  - 16-9
AB  - INTRODUCTION: As part of the global strategic plan to reduce the number of 
      measles deaths in India, the state of Tamilnadu aims at > or =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., > or 
      =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.
FAU - Sivasankaran, Saravanan
AU  - Sivasankaran S
AD  - National Institute of Epidemiology, Chennai, India.
FAU - Manickam, P
AU  - Manickam P
FAU - Ramakrishnan, R
AU  - Ramakrishnan R
FAU - Hutin, Y
AU  - Hutin Y
FAU - Gupte, M D
AU  - Gupte MD
CN  - Centers for Disease Control and Prevention (CDC)
LA  - eng
PT  - Journal Article
PL  - United States
TA  - MMWR Suppl
JT  - MMWR supplements
JID - 101677337
RN  - 0 (Measles Vaccine)
SB  - IM
MH  - Catchment Area, Health
MH  - *Health Care Surveys
MH  - Humans
MH  - Immunization Programs/*statistics & numerical data
MH  - India/epidemiology
MH  - Infant
MH  - Measles/epidemiology/*prevention & control
MH  - Measles Vaccine/*administration & dosage
MH  - Quality Assurance, Health Care/*methods
MH  - Sampling Studies
MH  - Vaccination/*statistics & numerical data
EDAT- 2006/04/29 09:00
MHDA- 2006/05/02 09:00
CRDT- 2006/04/29 09:00
PHST- 2006/04/29 09:00 [pubmed]
PHST- 2006/05/02 09:00 [medline]
PHST- 2006/04/29 09:00 [entrez]
AID - su5501a5 [pii]
PST - ppublish
SO  - MMWR Suppl. 2006 Apr 28;55(1):16-9.