A study from the Delhi School of Economics and a press release by the Ministry of Consumer Affairs, Food & Public Distribution supports the statement.
According to a study conducted by economist Jean Dreze and Reetika Khera published by the Delhi School of Economics, Indian states approach differently in identifying households below the poverty line. It also mentions that the government depends on the 2011 census data for such identification.
The Hindu article refers to Dr Dreze and Dr Khera and states about 10 crore people have been excluded from the Public Distribution System coverage 2011 census data is calculated State-wise National Food Security Act (NFSA). It also says that India’s population was 121 crore in 2011 and that PDS covered approximately 80 crore people. The shortfall would be around 10 crore people who have been excluded from the PDS with growing urbanisation taken into account.