Individual and additive-effect relationships of menopausal symptoms and subjective cognitive decline among nurses during menopausal transition: a cross-sectional study.

Objective: This study aimed to examine the individual and additive-effect relationships between menopausal symptoms and subjective cognitive decline among nurses during menopausal transition.

Methods: Between February and September 2019, a convenience sampling strategy was used, involving 1,335 Chinese nurses undergoing menopausal transition. A general information survey that included the Subjective Cognitive Decline Scale and the Menopause Rating Scale was completed. Based on a cut-off point of the subjective cognitive decline score of 7.5, the overall sample was divided into mild and severe groups. Propensity score matching was performed to balance covariates of mild and severe subjective cognitive decline. The individual and cumulative effects of menopausal symptoms and subjective cognitive decline were analyzed using binary logistic regression and the Cochran-Armitage trend test, respectively.

Results: After propensity score matching, none of the parameters showed significant differences between the groups. Logistic regression analysis revealed that four menopausal symptoms were closely associated with severe subjective cognitive decline. The Cochran-Armitage trend test indicated odds ratios linking the presence of these symptoms with increased severe subjective cognitive impairment. In addition, nurses simultaneously experiencing two or more core menopausal symptoms were over six times more likely to have severe subjective cognitive decline than nurses experiencing none or one core menopausal symptom during menopausal transition.

Conclusions: Individual and additive numbers of menopausal symptoms significantly influenced subjective cognitive decline in nurses during their menopausal transition. These findings suggest that interventions aimed at enhancing the cognitive performance of nurses experiencing menopause should consider menopausal symptoms.