Before revision:  The indicators  are derived from  Census 2011 [The Ministry of Home Affairs, Government of India, 2011] and  NFHS-4 [The Ministry of Health and Family Welfare, Government of India, 2016] survey data.
After revision:  The indicators that we use are derived from Census 2011 [The Ministry of Home Affairs, Government of India, 2011] and NFHS-4 [The Ministry of Health and Family Welfare, Government of India, 2016] survey data.