Indoor air pollution and cognitive function among older adults in India: a multiple mediation approach through depression and sleep disorders.

"Declarations Ethics approval and consent to participateThe analysis is based on secondary data available in the public domain for research; thus, no approval was required from any institutional review board (IRB). The survey agencies had conducted the fieldwork with prior taking informed consent from the respondents. The LASI was conducted in accordance with the relevant ethical guidelines and regulations. The participants were given brochures containing information which explained the survey purpose, privacy protection, health assessments and safety measures as part of the ethical protocols. Informed Consent forms were as per the Human Subjects Protection. Consent for publicationNot applicable. Competing interestsThe authors declare no competing interests. Competing interests The authors declare no competing interests."

"Funding This research received no specific grant from any funding agency in the public, commercial or not-for-profit sectors."