Sources & References

Used for national marriage timing context and historical comparison.

Used for discussion of average husband-wife age gaps and long-term demographic trends.

Used for occupational and marital-status analysis context.

Used for fertility, birth timing, and pregnancy-related demographic context.

Used for modern first-marriage age by sex.

Used as a nationally known survey source for family, marriage, work, and social attitudes.

Used for social and demographic context on marriage and family formation.

Used for discussion of age gaps and marital satisfaction over time.

Used for discussion of age differences, mortality, and long-term health implications.