Factors associated with stress among pregnant women with a second child in Hunan province under China's two-child policy: a mixed-method study.

"Declarations Ethics approval and consent to participateBefore being permitted to participate in the study, participants were informed of the purpose of the research, the meaning and data security. In addition, participation was voluntary and anonymous, they were informed of their rights and responsibilities and that they had the right to withdraw from participation at any time. All participants signed written, informed consent. Informed consent was obtained from all participants. Ethical approval for the study was obtained from IRB of behavioral and nursing research in School of Nursing of CSU, China, protocol number was 2017045. Consent for publicationNot applicable. Competing interestsThe authors declare no competing interests. Competing interests The authors declare no competing interests."

"Funding The study was supported by the Natural Science Foundation of Hunan Province (2023JJ40915);Key Research and Development Project funded by the Department of Science and Technology of Hunan Province (2023SK2028); the Hunan Provincial Philosophy and Social Sciences Program of China (22YBX024)."