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Table 1 Self-reported and consolidated derived menopausal status for women in the 45 and Up Study

From: Accurate categorisation of menopausal status for research studies: a step-by-step guide and detailed algorithm considering age, self-reported menopause and factors potentially masking the occurrence of menopause

Menopausal status Post-menopause Peri-menopause Pre-menopause Unknown
n (% total; % change compared to self-report) n (% total; % change compared to self-report) n (% total; % change compared to self-report) n (% total; % change compared to self-report)
Self-reported 93,107 (65.1) 9,076 (6.4) 17,930 (12.5) 22,860 (16.0)
Consolidated—reference methoda 105,817 (74.0%; + 8.9%) 10,785 (7.5%; + 1.2%) 15,582 (10.9%; − 1.6%) 10,789 (7.6%; − 8.4%)
Consolidated—conservative methodb 102,008 (71.4%; + 6.2%) 10,785 (7.5%; + 1.2%) 15,582 (10.9%; − 1.6%) 14,598 (10.2%; − 5.8%)
Consolidated—least-conservative methodc 107,394 (75.1%; + 10.0%) 10,785 (7.5%; + 1.2%) 15,582 (10.9%; − 1.6%) 9,212 (6.4%; − 9.6%)
Consolidated—reference method without re-classifying women with detailed “unknown” status 92,629 (62.7%; − 0.3%) 10,785 (7.5%; + 1.2%) 15,582 (10.9%; − 1.6%) 23,977 (16.8%; + 0.8%)
Consolidated—conservative method without re-classifying women with detailed “unknown” status 89,683 (65.6%; − 2.4%) 10,785 (7.5%; + 1.2%) 15,582 (10.9%; − 1.6%) 26,923 (18.8%; + 2.8%)
Consolidated—least-conservative method without re-classifying women with detailed “unknown” status 93,849 (65.6%; + 0.5%) 10,785 (7.5%; + 1.2%) 15,582 (10.9%; − 1.6%) 22,757 (15.9%; − 0.1%)
  1. aUnknown or possibly masked status re-classified to “post-menopause” status for women aged ≥ 55 years at baseline
  2. bUnknown or possibly masked status re-classified to “post-menopause” status for women aged ≥ 57 years at baseline
  3. cUnknown or possibly masked status re-classified to “post-menopause” status for women aged ≥ 54 years at baseline