Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_25042332_33 (region VARCHAR, life_expectancy_at_birth__2001_2002_ VARCHAR)

### Question ###
Which region had a life expectancy at birth of 77.9 from 2001-2002?

### Accurate SQL ###

SELECT region FROM table_25042332_33 WHERE life_expectancy_at_birth__2001_2002_ = "77.9"