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題 名 | The Feasibility of Using Photographs to Estimate Historical Heights of Children=運用照片估計兒童過去的身高的可行性 |
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作 者 | 王蓉君; 張武修; 王蓮安; 郭浩然; | 書刊名 | 臺灣兒科醫學會雜誌 |
卷 期 | 41:3 民89.05-06 |
頁 次 | 頁136-139+168 |
分類號 | 412.5 |
關鍵詞 | 照片; 身高; 兒童; Photograph; Height; Child; |
語 文 | 英文(English) |
中文摘要 | 在進行兒童生長發育的研究時,往往會遇支缺少某些時期的身高紀錄的情況。為了評估使用相片來估計過去某時期的身高的可行性。我們由正在進行的某研究話群收集了23張相片,這些相片都是在某次身高測量前後兩個月內所拍攝的。我們由第張相片中選取一個參攷物,然後依參攷物的實際高度和相片中孩童與參攷物的高度比從事貿易來推估該孩童當時的身高。由兩位研究人員分別對第張相片獨立進行這們的估計,結果發現這兩套估計值都和測量值有很密切的相關性(相關係數=0.99,0.0001)。這兩套估計值和測量值的差異平均分別為1.4公分與1.5公分,皆無統計上的顯著意義(Wilcoxon Signed rank test,p>0.05),顯示這個估計法由不同的人使用時,仍具有高重現性。我們同時也發現,橫著照的相片比直著照的相片能提供更准確的估計值。在不需要任何高科技儀器的情況下,這個簡單的方法能夠很方便地運用到滸病學研究上,而得到尚稱滿意的估計值。 |
英文摘要 | In studying the growth and development of children, records of body heights are often unavailable for certain periods of time. To evaluate the feasibility of using photographs to estimate body heights in the past, we obtained 23 photographs taken within two months of a documented measurement of height from a cohort of an on-going study. From each photograph, an object was selected as the reference, and the historical height of the child was estimated by proportional projection according to the height of the reference. Two independent sets of estimates were made, and both correlated well with measured heights (correlation coefficient=0.99, p<0.0001). The mean differences between the measured and estimated heights were 1.4cm and 1.5cm respectively, and both were not statistically significant (Wilcoxon signed rank test, p>0.05). The average differences between the two sets of estimates was only 0.1 cm (p>0.05 for Wilcoxon signed rank test), which indicates a high reproducibility. Photographs taken in the “landscape” style tended to provid better estimates than those taken in the “portrait” style. Without any high technology equipment, this simple approach can be readily applied to obtain satisfactory estimates for epidemiological studies. |
本系統中英文摘要資訊取自各篇刊載內容。