Symptoms: US Census Bureau Household Pulse Survey, indicator “Symptoms of Anxiety Disorder or Depressive Disorder”, averaged across 72 survey rounds. Deaths: the national mortality register.

instrument	what it measures	direction
household survey	36.2% of women, 29.4% of men	women 1.231×
death register	suicides recorded by sex	men 3.69×

Multiplied together the two instruments disagree by 4.54×. Neither is mistaken. A questionnaire measures who says something to a stranger who asked; a death certificate measures who died and what a coroner wrote. They are not two estimates of one quantity.