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Table 1 Selection criteria for including studies

From: Symptoms of gastroesophageal reflux disease in severely mentally retarded people: a systematic review

Types of studies:

   - empirical studies with a minimal sample size of five subjects

   - published from 1990 on.

Types of participants:

   - subjects are mentally retarded or have a neurological disorder1;

   - subjects are at least two years of age.

Types of symptoms:

   - all types of observable symptoms that are related to the results of a valid reference test for diagnosing GERD, such as PH-measurement, gastrointestinal endoscopy, radiologic method for the detection of gastroesophageal reflux.

  1. 1 People with a serious neurological impairment such as cerebral palsy are often mentally retarded.
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BMC Gastroenterology

ISSN: 1471-230X

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