A field study, covering 92 villages of Mahendragarh, Sirsa, Karnal, Sonipat & Mewat districts had been conducted on the impact of the sex ratio on marriage which covered over 10,000 households and found that 9,000 married women were bought from other states. The study was conducted by NGO Drishti Stree Adhyayan Prabodhan Kendra but the families kept denying of any exchange of money for the bride.