Article History
Received: 18 October 2018
Accepted: 3 April 2019
First Online: 24 April 2019
Compliance with ethical standards
:
: We declare that no competing interests exist.
: The authors declare that they have no conflict of interest.
: The authors assert that all procedures contributing to this work fulfil the ethical standards of the National Family Health Survey. The protocol for the NFHS-4 survey, including the content of all the survey questionnaires, was approved by the IIPS Institutional Review Board and the ICF Institutional Review Board. The protocol was also reviewed by the US Centers for Disease Control and Prevention (CDC).