Using the census.
D000328:Adult; D000367:Age Factors; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009726:Nurses / Q000600:supply & distribution*; D009729:Nursing; D012737:Sex Factors; D012959:Socioeconomic Factors; D006113:United Kingdom; D000078329:Workforce