Correspondence of Two Procedures to Measure Abdominal Circumference in a Convenience Sample of Urban, Middle-Class Schoolchildren in Guatemala City

以瓜地馬拉市的中產階級學童為樣本來看兩種測量腹圍方法的一致性

Virginia J Alvarado ； Evelyn Mayorga ； Susana Molina ； Noel W Solomons

《Asia Pacific Journal of Clinical Nutrition》 19卷1期 (2010/03) Pp. 14-21

https://doi.org/10.6133/apjcn.2010.19.1.03

摘要

背景：即使在發展中國家，青少年的過重及肥胖也日益受關注。評估中央肥胖（例如：腹圍）的方法正逐漸受重視。目的：以居住在瓜地馬拉市，年齡為72至131個月的中產階級學童為樣本，比較兩種測量腹圍的方法。方法：在2004年8月至2005年4月，以363位學童（190位男孩與173位女孩）為樣本的橫斷性研究。使用傳統的自然腰圍測量法（NWC）以及以肚臍為基準的腹圍測量法（UAC）來記錄腹圍，而測量時須穿著薄質的圓領汗衫。同時測量身高和體重。將這兩種方法測量值以性別及年齡做比較。另外，使用相關係數及Bland-Altman迴歸方法進行分析。並且以其中50位孩童為次樣本，進行再現性分析。結果：男童的平均自然腰圍為63.2±10.0公分，女童的平均自然腰圍為60.2±7.7公分（p值為0.001）；男童以肚臍為基準的平均腹圍為65.9±11.0公分，女童為63.2±8.8公分（p值為0.008）。腹圍的大小大致隨著年齡的增加而增加。自然腰圍測量值及以肚臍為基準的腹圍測量值之間的差異隨著腹圍的增加而增加。BMI對自然腰圍與BMI對腹圍的皮爾森相關係數為0.92，變異係數為0.46±0.27%。自然腰圍測量法以及以肚臍為基準的腹圍測量法的再測量的再現性都高（相關係數大於0.98，變異係數為0.50±0.24%）。結論：藉由對於薄質衣料的校正可獲得可信的自然腰圍測量值及以肚臍為基準的腹圍測量值。這兩種測量方法都適合用以蒐集有文化背景限制的族群的體組成資料。

關鍵字

青少年中央肥胖 ； 自然腰圍 ； 以臍帶為基準的腹圍 ； 身體質量指數 ； 瓜地馬拉

並列摘要

Background: Given an emerging concern for juvenile overweight and obesity, even in populations of developing countries, techniques to assess central obesity, such as abdominal circumference (AC), are of increasing interest. Objective: To compare two procedures for measuring AC in schoolchildren from a convenience sample of middle- class, urban children aged 72 to 131 months in Guatemala City. Methods: We conducted a cross-sectional study (August 2004- April 2005) in 363 schoolchildren; 190 boys and 173 girls. The AC was recorded using both the conventional natural waist circumference (NWC) and the umbilical-level abdominal circumference (UAC) methods; each of which was measured over a thin T-shirt. Height and weight were also measured. The NWC and UAC methods were compared between genders and age groups. In addition, correlation coefficients and Bland-Altman regression were performed. A reproducibility study was performed on a subsample of 50 children. Results: Mean NWC was 63.2±10.0 cm for boys and 60.2±7.7 cm for girls (p=0.001), and mean UAC was 65.9±11.0 cm for boys and 63.2±8.8 cm for girls (p=0.008). Both measures of AC generally increased with age. The UAC - NWC difference increased with abdominal girth. The Pearson correlation coefficient of BMI vs. NWC and BMI vs. UAC was r=0.92, CV=0.46±0.27%. A high test-retest reproducibility (r ＞ 0.98, CV= 0.50±0.24%) of the NWC and UAC measurements was found. Conclusion: Reliable NWC and UAC measurements may be obtained by applying a correction term to account for light clothing. Both measurements are applicable methodologies for the collection of data in populations with cultural limitations.

並列關鍵字

juvenile central obesity ； natural waist circumference ； umbilical abdominal circumference ； body mass index ； Guatemala