The data on acute flaccid paralysis (AFP), polio and non-polio AFP and number of polio rounds in each state in each year from 2000 to 2009 were from the National Polio Surveillance web site (http://www.npspindia.org/bulletin.pdf).
a) Data on numbers of polio rounds during the year 2003 was incomplete.
b) When different areas within a state received different number of doses, the arithmetic mean number of doses was taken as the representative dose for that state.
2. Per capita income was obtained from
Swati Gupta. States Performance in Per capita Income Growth ASSOCHAM ECO PULSE January 2008
3. Population density of each state and union territory was obtained from
Census of India. "Area and Population". Government of India (2001). http://www.censusindia.gov.in/Census_And_You/area_and_population.aspx. Quoted in Wikipedia: List of states and union territories of India by population. http://en.wikipedia.org/wiki/List_of_states_and_union_territories_of_India_by_population
4. Data on female literacy and overall literacy was obtained from the Census of India.
Census of India 2001-- State wise population totals