Explanation:

Jharkhand state consists of 24 districts out of which one-third were selected purposively on the basis of higher percentage of tribal population as per census 2001 of India. These districts were: Simdega, Khunti, Gumla, West Singhbhum, Lohardagga, Pakur, Dumka and Latehar. One block was randomly selected from each district and total numbers of 8 blocks i.e. Thethaitangar from Simdega district, Khunti from Khunti district, Bharno from Gumla district, Sadar Chaibasa from West Singhbhum district, Bhandra from Lohardagga district, Pakuria from Pakur district, Dumka from Dumka district and Latehar from Latehar district were randomly selected. Two villages were randomly selected from each block and total numbers of 16 villages i.e. Joram and Jampani from Thethaitangar block, Lamlum and Ramrong from Khunti block, Bharno and Turiamba from Bharno block, Mesenda and Tonda from Sadar Chaibasa, Bhandra and Masmano from Bhandra block, Paliadaha and Khasa from Pakuria block, Jhitki and Sarsaria from Dumka block and Pasu and Arahara from Latehar block were randomly selected.