Monitoring health interventions – who's afraid of LQAS?
| Autor: | Sung Hye Kim, Lorenzo Pezzoli |
|---|---|
| Přispěvatelé: | Korea International Cooperation Agency |
| Rok vydání: | 2013 |
| Předmět: |
Short Communication
Population Psychological intervention coverage health interventions Meningococcal Vaccines Sample (statistics) Meningitis Meningococcal Neisseria meningitidis immunization Health services Risk Factors Statistics Humans Medicine Operations management Niger education education.field_of_study Immunization Programs business.industry Health Policy Public Health Environmental and Occupational Health meningitis Public Health Epidemiology Global Health lot quality assurance sampling Lot quality assurance sampling business Delivery of Health Care |
| Zdroj: | Global Health Action; Vol 6 (2013): incl Supplements Global Health Action |
| ISSN: | 1654-9880 1654-9716 |
| Popis: | Lot quality assurance sampling (LQAS) is used to evaluate health services. Subunits of a population (lots) are accepted or rejected according to the number of failures in a random sample ( N ) of a given lot. If failures are greater than decision value ( d ), we reject the lot and recommend corrective actions in the lot (i.e. intervention area); if they are equal to or less than d , we accept it. We used LQAS to monitor coverage during the last 3 days of a meningitis vaccination campaign in Niger. We selected one health area (lot) per day reporting the lowest administrative coverage in the previous 2 days. In the sampling plan we considered: N to be small enough to allow us to evaluate one lot per day, deciding to sample 16 individuals from the selected villages of each health area, using probability proportionate to population size; thresholds and d to vary according to administrative coverage reported; α≤5% (meaning that, if we would have conducted the survey 100 times, we would have accepted the lot up to five times when real coverage was at an unacceptable level) and β ≤ 20% (meaning that we would have rejected the lot up to 20 times, when real coverage was equal or above the satisfactory level). We classified all three lots as with the acceptable coverage. LQAS appeared to be a rapid, simple, and statistically sound method for in-process coverage assessment. We encourage colleagues in the field to consider using LQAS in complement with other monitoring techniques such as house-to-house monitoring. Keywords : lot quality assurance sampling; coverage; health interventions; immunization; meningitis; Niger (Published: 12 November 2013) Citation : Glob Health Action 2013, 6 : 21921 - http://dx.doi.org/10.3402/gha.v6i0.21921 |
| Databáze: | OpenAIRE |
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