Quality Control of Data Collection
Quality control (QC) in association with data collection (DC) has been an important component of disease-surveillance activities in China.
- In November of each year, the NDRS actively surveys hospitals and households to identify the proportion of notifiable diseases that went unreported. During a recent year, for example, the proportion of class A and B infectious diseases that was unreported was 27%; this proportion was used to correct the total annual estimate of morbidity attributable to infectious diseases.
- Disease Surveillance Points (DSPs) are surveyed annually to estimate underreporting of births, deaths, and morbidity due to infectious diseases. From 1990 to 1991, for example, reporting of morbidity from infectious diseases improved. The proportions of unreported births, age-specific deaths, and disease-specific deaths are also reported. In 1991, a team from the Chinese Academy of Preventive Medicine evaluated the quality of data reported from 18 DSPs located in nine provinces. In their study, the evaluation team identified factors that influenced data quality.
Read more about this topic: Disease Surveillance In China
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