The purpose of a study by Elliott et al. (A-32) was to assess the prevalence of vitamin D deficiency in women living in nursing homes. The sample consisted of 39 women in a 120-bed skilled nursing facility. Women older than 65 years of age who were long-term residents were invited to participate if they had no diagnosis of terminal cancer or metastatic disease. In the sample, 23 women had 25-hydroxyvitamin D levels of 20 ng/ml or less. Construct a 95 percent confidence interval for the percent of women with vitamin D deficiency in the population presumed to be represented by this sample.