“Delhi despite being the Capital has one of the worst sex ratios of 866 females per 1,000 males according to 2011 census; the situation in the south-west district is one of the worst with the child sex ratio of 836 girls per 1,000 boys; and with low levels of awareness and nuclear families the aspiration and desire for male child is growing by each passing day,” said a release issued by Centre for Social Research.