Froedtert Hospital has been named a 2017 Leader in LGBTQ Healthcare Equality by the Human Rights Campaign Foundation, the educational arm of the country's largest lesbian, gay, bisexual, transgender and questioning/queer civil rights organization.
Indeed, the data presented here confirm that dude is an address term that is used mostly by young men to address other young men; however, its use has expanded so that it is now used as a general address term for a group (same or mixed gender), and by and to women.
Sex is thus biologically determined, whereas gender is socially constructed. We are socialized to expect that gender category (man/boy or girl/woman) follows sex, and in turn, to infer that sex follows the perceived gender of a person. However, as the rich diversity of gender identities and expressions makes clear, gender does not necessarily follow sex in the ways we are socialized to expect.