More groups of households will be surveyed from April 15 to April 29 for the Household Expenditure Survey. This time, survey will cover households in Aljunied, Buangkok, Bukit Timah, Clementi, Jurong East, Tampines and Yishun.

This is the tenth time the Singapore Department of Statistics is conducting this survey which collects up-to-date information on households' expenditure for updating the weighting pattern and the basket of goods and services used in the compilation of the Consumer Price Index. Data collected also serves as input for social and economic policy planning, said a statement by the Singapore Department of Statistics on Monday.

The year-long survey covers a total of 11,000 households. Survey officers will carry identification cards and letters of authorisation when they visit selected households. Households who wish to verify the identity of the survey officers may call 1800-888-1213 from 8.30am to 10pm. All information will be kept in confidence said the Department.