  Sex and gender-based healthcare disparities contribute to differences in
health outcomes. We focus on time to diagnosis (TTD) by conducting two
large-scale, complementary analyses among men and women across 29 phenotypes
and 195K patients. We first find that women are consistently more likely to
experience a longer TTD than men, even when presenting with the same
conditions. We further explore how TTD disparities affect diagnostic
performance between genders, both across and persistent to time, by evaluating
gender-agnostic disease classifiers across increasing diagnostic information.
In both fairness analyses, the diagnostic process favors men over women,
contradicting the previous observation that women may demonstrate relevant
symptoms earlier than men. These analyses suggest that TTD is an important yet
complex aspect when studying gender disparities, and warrants further
investigation.
