Table 1.

Reproducibility of self-reported age at menopause by surgical or natural menopause (n=240). Concordant means age at menopause reported in 2004 was within one year or less of the age at menopause reported in 1994; Discordant means age at menopause reported in 2004 was not within 1 year of the age at menopause reported in 2004.

	Surgical menopause (n=143)			Natural menopause (n=97)
	Concordant (n=85)	Discordant (n=58)	p-value	Concordant (n=45)	Discordant (n=52)	p-value
Sociodemographic characteristics
Age, mean (s.d.)	62.5 (10.3)	61.8 (10.7)	.69	72.4 (10.8)	71.7 (11.2)	.80
Years from menopause (as reported in 1993), mean (s.d.)	15.8 (9.3)	15.4 (9.5)	.83	14.4 (11.6)	13.0 (11.6)	.55
White, n (%)	54 (63.5%)	25 (43.1%)	.02*	28 (62.2%)	38 (73.1%)	.25
Education less than high school, n (%)	28 (32.9%)	23 (39.7%)	.41	14 (31.1%)	19 (36.5%)	.57
Medical comorbidity and functional status
3 or more chronic medical conditions, n (%)	16 (18.8%)	22 (37.9%)	.01*	11 (24.4%)	7 (13.5%)	.17
ADLs impaired, n (%)	8 (9.4%)	4 (6.9%)	.59	7 (15.6%)	3 (5.8%)	.11
IADLs impaired, n (%)	14 (16.5%)	16 (27.6%)	.11	9 (20.0%)	9 (17.3%)	.69
Cognitive status
MMSE score, mean (s.d.)	28.3 (1.9)	27.9 (2.7)	.28	26.8 (5.5)	27.4 (2.6)	.51

Note: Data gathered from the Baltimore, Maryland Epidemiologic Catchment Area Program Follow-up, 1993 and 2004.

^*P-values given for comparison groups with chi-square or t-test as appropriate. s.d.= standard deviation; ADL= activities of daily living; IADL=instrumental activities of daily living; MMSE=Mini-Mental State Examination. *p<.05