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Collecting Valid and Reliable Data: Fieldwork Monitoring Strategies in a Health...

Kislaya, Irina; Santos, Ana João; Lyshol, Heidi; Antunes, Liliana; Barreto, Marta; Gaio, Vânia; Gil, Ana Paula; Namorado, Sónia; Matias Dias, Carlos 

Introduction: Health surveys constitute a relevant information source to access the population’s health status. Given that survey errors can significantly influence estimates and invalidate study findings, it is crucial that the fieldwork progress is closely monitored to ensure data quality. The objective of this study was to describe the fieldwork monitoring conducted during the first Portuguese National Healt...


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