頁籤選單縮合
題名 | Two-Phase Sampling Design in Survey and Case-Control Study= |
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作者 | Chu,Nain-feng; |
期刊 | 中華職業醫學雜誌 |
出版日期 | 19981000 |
卷期 | 5:4 1998.10[民87.10] |
頁次 | 頁219-228 |
分類號 | 412.53 |
語文 | eng |
關鍵詞 | Two-phase sampling design; |
英文摘要 | The epidemiological diagnostic tests are often too expensive, invasive, or time-consuming for general population where the great majority will be negative. In order to validate the screening test results a sub-sample of the screened subjects can be drawn for testing by the accurate diagnostic test, a two-phase sampling design has been considered. It is sometimes convenient and economical to collect certain items of information on the whole of the units of a sample, and other items of information on only some of these units, these latter units being so chosen as to constitute sub-sample of the units of the original sample, this called two-phase sampling design. |
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