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Date of survey

:

November 17 to 19, 2013

 

Survey method

:

Self-administered online questionnaire

 

Target population

:

Full-time students of the University of Hong Kong aged 18 or above

 

Sampling method

:

Invitations were sent to all HKU full-time students via HKU Bulk Email Delivery System

 

Sample size

:

1,650 successful cases

 

Effective response rate

:

8.9%

 

Standard error (assuming no response bias)

:

Less than 1.2% (At 95% confidence level, the maximum sampling error of all percentages should be no more than +/-2.3 percentage points)