Shobhit Srivastava1, Naina Purkayastha2, Himanshu Chaurasia3, T Muhammad4. 1. International Institute for Population Sciences, Mumbai, Maharashtra, 400088, India. 2. Department of Statistics, Dibrugarh University, Dibrugarh, Assam, India. 3. National Institute for Research in Reproductive Health, ICMR, Mumbai, 400088, India. 4. International Institute for Population Sciences, Mumbai, Maharashtra, 400088, India. muhammad@iips.net.