Additional file 7 of 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

Additional file 7: Correspondence between directly self-reported, detailed derived and consolidated derived menopausal status in the 45 and Up Study (based on the reference approach, here, age ��� 55 years at baseline). The diagram illustrates the classification of female 45 and Up Study participants by directly self-reported menopausal status (left vertical bar), detailed derived menopausal status (middle vertical bar) and consolidated derived menopausal status (right vertical bar). The horizontal bands represent the re-classification of participants between the different status assignments, coloured according to the directly self-reported menopausal status. For example, ~ 19,000 participants had directly self-reported ���not sure��� status (light blue horizontal bands), of whom ~ 8,000 were assigned the ���no periods due to hysterectomy��� detailed derived menopausal status. Of these ~ 5,500 were then assigned ���post-menopause��� consolidated derived status in the final step, while ~ 2,500 were assigned ���unknown��� consolidated derived status.