Contact Information返回

  Date of survey : 8-20 May 2001
  Target population : Cantonese speakers in Hong Kong aged 18 or above who possess mobile phones
  Survey method : Telephone interviews
  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 : 1,535 successful cases
  Response rate : 66.4%
  Standard sampling error : Less than 1.3%