Previous research has demonstrated that average injury rate of stair-related falls has a trimodal distribution with a peak for young adults in their 20’s, with women in their 20’s sustaining about 80% more injuries than men of the same age.
The purpose of this study was to quantify young adult behaviors during staircase descent, with the goal of identifying behaviors that increase fall risk on stairs, and to determine if young women are more likely to demonstrate these risky behaviors. Young adults engaged in behaviors that may increase fall risk, including not using the handrail, carrying items, using electronic devices, holding a conversation, and wearing footwear that increases fall risk.
Women demonstrated several behaviors that increase their fall risk relative to men: less likely to use the handrail, more likely to be holding something in their hands, more likely to be engaged in conversation, more likely to wear sandals and heels, and they demonstrated a higher number of co-occurring risky behaviors.
However, women also engaged in behaviors that may be protective of fall risk: less likely to skip steps and more likely to look at the stair tread during transition steps.
Overall, the observed sex-related differences are strengthened by the inclusion of both short and long staircases since similar sex-related effects were observed on both staircases.
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0288438
The published article is quite long and so has much more information, but I still couldn't work out why the research had happened.