Conclusions
To conclude, our study found that significantly associated between chronotype and depressive symptoms in infertility patients, although there may not be a partner effect. Morning and neutral chronotypes may be effective in alleviating depressive symptoms during infertility treatment. From a clinical and public health perspective, improving the psychological status of infertility patients during treatment may benefit reproductive treatment outcomes. Also, the underlying causes of depressive symptoms may be multifactorial, and additional prospective studies are needed to validate this association as well as to identify effective strategies to promote mental health in this population.