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Date of survey

:

November 1 to 6, 2012

 

Survey method

:

Telephone survey conducted by telephone interviewers

 

Target population

:

Hong Kong residents aged 18 or above who speak Cantonese

 

Sampling method

:

Telephone numbers were selected randomly from residential telephone directories and mixed with additional numbers generated by the computer. If more than one subject had been available, the one who had his/her birthday next was selected.

 

Sample size

:

1,022 successful cases (no less than 503 successful cases of sub-sample for each question)

 

Overall response rate

:

66.8%

 

Std. sampling error

:

Less than 2.2% (at 95% confidence level, the maximum sampling error of all percentages should be no more than +/-4.5 percentage points)