Connett G J, Quak S H, Wong M L, Teo J, Lee B W
Department of Paediatrics, National University Hospital of Singapore.
Thorax. 1994 Sep;49(9):901-5. doi: 10.1136/thx.49.9.901.
A study was undertaken to produce reference values of lung function in Chinese children and a means of calculating adjusted standard deviation scores of lung function for Malay and Indian ethnic groups.
A cross sectional study of lung function (forced expiratory volume in one second and forced vital capacity) measured with a Jaeger spirometer was performed in a representative sample of Singaporean children made up of 1403 Chinese, 335 Malays, and 206 Indians.
The relation between natural logarithms of lung function and height was approximately linear until 150 cm in boys and 140 cm in girls. At these heights there were abrupt changes in the gradients of both lines. Separate regression lines were derived for heights above and below these inflection points. Significant differences in lung function were seen in Chinese compared with Malay and Indian children. In particular, values were considerably lower among Indian boys.
The relation between lung function and height in Chinese children is best described by two regression equations over separate height ranges. Information is provided for the calculation of reference values and standard deviation scores, together with the correction factors that need to be applied to derive these values in Malay and Indian children.
开展了一项研究，以得出中国儿童肺功能的参考值，以及一种计算马来族和印度族儿童肺功能校正标准差分数的方法。
采用耶格肺功能仪对新加坡儿童的一个代表性样本进行了肺功能（一秒用力呼气量和用力肺活量）的横断面研究，该样本包括1403名中国儿童、335名马来族儿童和206名印度族儿童。
在男孩身高达到150厘米、女孩身高达到140厘米之前，肺功能自然对数与身高之间的关系大致呈线性。在这些身高时，两条线的斜率都出现了突然变化。针对这些拐点以上和以下的身高分别得出了回归方程。与马来族和印度族儿童相比，中国儿童的肺功能存在显著差异。特别是，印度族男孩的肺功能值明显较低。
中国儿童肺功能与身高之间的关系在不同身高范围内最好用两个回归方程来描述。提供了计算参考值和标准差分数的信息，以及在马来族和印度族儿童中得出这些值时需要应用的校正因子。
