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| Date of survey | : | 12 - 23 March 2001 | |
| Target population | : | Hong Kong population aged 18 or above | |
| Survey method | : | Telephone interviews | |
| Sampling method | : | Telephone numbers were selected randomly from telephone directories, together 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 | : | 1,002 successful cases | |
| Response rate | : | 63.1% | |
| Standard sampling error | : | Less than 1.6% |
