Table: religion_stats_india
Columns: religious_group
population
growth_1991_2001
sex_ratio_total
literacy
work_participation
sex_ratio_rural
sex_ratio_urban
sex_ratio_child

Question: What is the child sex ration for the population with 37.7% work participation?
SQL: SELECT MAX("sex_ratio_child") FROM religion_stats_india WHERE "work_participation" = '37.7%'