| Population | Japanese Nationals Aged 20 and Over |
|---|---|
| Sample Size | A: 1,800 B: 1,200 |
| Sampling Method | Stratified Two-stage Probability Sampling Method (120 points) |
| Survey Method | Face-to-Face Interviewing Method |
| Research Term | 2004/11/184-12/7 (b: 12/12) |
| Completed Questionnaires | A: 1,139 (63.3%) B: 785(65.4%) |