Description:
<jats:p>Dr Oski's controlled study (Pediatrics 66:168, 1980) comparing the gastrointestinal (GI) symptoms of a group (N = 44) of infants receiving formula with iron and a group (N = 49) receiving formula with no iron was well conceived and practical. However, his concluding statement "...our study failed to provide any evidence for the commonly held belief that iron-fortified formulas produce gastrointestinal side effects in infants," was not supported conclusively by his data.</jats:p>
<jats:p>A recent review article emphasizes the importance of type II errors in clinical controlled trials.1</jats:p>