Table 3 Age-adjusted associations (ORs and 95% CIs) between indicators of socioeconomic position and hysterectomy and/or oophorectomy in women born in the 1920s to 1940s resident in Australia and Great Britain, using relative indices of inequality (among women with complete data on hysterectomy and all indicators of socioeconomic position)

	Women resident in Australia		Women resident in Great Britain
	ALSWH older cohort (born 1920–1926) N = 12 792; hysterectomy and/or oophorectomy = 4696	ALSWH mid-aged cohort (born 1946–1951) N = 14 078; hysterectomy and/or oophorectomy = 4264	BWHHS (born 1920–39) N = 3174; hysterectomy and/or oophorectomy = 739	NSHD (born 1946) N = 1518; hysterectomy and/or oophorectomy = 360
Own occupational class	1.00 (0.79 to 1.26)	1.79 (1.46 to 2.19)	0.83 (0.61 to 1.12)	1.54 (0.99 to 2.39)
Head of household occupational class	1.06 (0.85 to 1.32)	1.83 (1.49 to 2.25)	1.06 (0.78 to 1.43)	1.44 (0.93 to 2.23)
Age at leaving full-time education	1.26 (1.03 to 1.54)	2.74 (2.20 to 3.40)	0.90 (0.65 to 1.26)	1.87 (1.10 to 3.17)
Educational qualification	1.19 (0.97 to 1.44)	2.46 (2.02 to 3.00)	–	1.43 (0.92 to 2.22)

Australian estimates are weighted to account for stratified sampling by area of residence.
ALSWH, Australian Longitudinal Study on Women’s Health; BWHHS, British Women’s Heart and Health Study; NSHD, National Survey of Health and Development.