GASTROESOPHAGEAL REFLUX DISEASE IN INFANTS, CHILDREN, AND ADOLESCENTS

The survey was conducted in two phases. In the first phase, the survey covered the basic population information and community environment of the sample units, whereas the second involved the knowledge, attitude and practices of women of childbearing age in regards to childbirth, contraception and repro- ductive health, their demands for family planning and services related to daily life and production. In the first phase of the survey, a probability proportional sampling method was adopted to sort out 1041 sample units in 337 counties/ cities/districts across the country. A total of 186 089 persons were registered, of whom 169 687 were permanent residents. In the second phase, 16.

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