Figure 1From: Current use of medical eponyms – a need for global uniformity in scientific publications Trend in use of "Down's syndrome" versus "Down syndrome". Trend in use of possessive form i.e., "Down's syndrome" in PubMed archives since 1970. Percentage is calculated using a formula, 100X/(X+Y), where X and Y indicated the total number of articles retrieved by text-word search "Down's syndrome" and "Down syndrome," respectively. Over the last 20 years, this frequency is approximately halved (33.7% versus 16.5%; P < 0.001).Back to article page