vitrine
corridors
walkthrough
methodology
vitrine · corridor · pairwise
1900s ↔ 1990s
Fact families the measure guard certifies comparable for this pair. Everything else renders as the gap it is. Every value links to its placard.
Budget composition
Life expectancy at birth
years (all races, both sexes)
⚠ Decades before the 1960s published white-only male/female life tables with no all-races total — the placard carries the sexed figures and the chart renders the gap rather than a spliced concept.
Infant mortality
deaths under age 1 per 1,000 live births
Homeownership
% of occupied housing units owner-occupied
Telephone
% of households
⚠ 1910s–1930s sources counted telephones per 1,000 population, not households — those decades render as gaps rather than a unit splice.
⚠ The 2020s point counts cell phones (92.7%); the landline share is on the placard.
Women's unpaid home production
hours per week, prime-age women
⚠ The 2020s source (ATUS) measures all-adult household activities, a concept splice from Ramey's women's series — flagged, not smoothed, so the chart renders it as a gap and the placard carries both figures.
Men's unpaid home production
hours per week, prime-age men
Food's share of spending
% of household expenditure
⚠ Populations differ across the century — 1901 wage-earner families vs modern consumer units; every placard names who was measured.
⚠ The 1950s point is the nearest available survey (CEX 1960–61), stated plainly rather than back-cast.
1900s · Tier A
42.54%
1990s · Tier A
Food $6,535/yr (15.0% of expenditure). Food at home $4,046 (62% of food), food away from home $2,489 (38%). Key items: meats/poultry/fish/eggs $1,064, cereals/bakery $658, fruits/vegetables $638, dairy $448, beef $319. Total expenditure: $43,670.