CREATE TABLE table_4629 ("Religious group" TEXT, "Population %" TEXT, "Growth  ( 1991\\u20132001 ) " TEXT, "Sex ratio  ( total ) " FLOAT, "Literacy  ( % ) " TEXT, "Work participation  ( % ) " TEXT, "Sex ratio  ( rural ) " FLOAT, "Sex ratio  ( urban ) " FLOAT, "Sex ratio  ( child ) " FLOAT)

What is the child sex ration for the population with 37.7% work participation?
SELECT MAX("Sex ratio (child)") FROM table_4629 WHERE "Work participation (%)" = '37.7%'
SELECT MAX("Sex ratio (child)") FROM "table_4629" WHERE "Work participation (%)" = '37.7%'