趋势面分析法研究我国足月低体重儿地理特征

Trend-Surface Analysis Was Applied to the Study of the Geographic Distrbution for LBWI in China

本文介绍了趋势面分析方法,并将其应用于我国足月低体重儿地理分布的研究。结果表明,三阶趋势面方程能解释观察变异的86.32％,可较好地描述足月低体重儿的地理分布规律。足月低体重儿具有明显的地理分布特征,其发生率以北部、东部和东北部较低,西南部较高。提示地理环境等因素在足月低体重几发生中可能起着重要作用。

Trend-Surface Analysis was used to study the geographic distribution for Low Birth Weight Infant at Term(LBWI) in China. The results revealed that the trend equation is(?)=1772.6089-37.5849X-4.1395Y+0.2626X^2+0.1518XY-0.2326Y^2-0.000336X^3-0.003572X^2Y+0.01077XY^2-0.009888Y^3 its goodness of fit equals 86.23％, i. e. the equation can explain 86.23％ of variation of observation. It can better reflect the law of the geographic distribution for LBWI, The disease was of striking characteristic of geographic distribution. The incidence of the disease in the north, east and northeast parts in China was lower while higher in the southwest. It was suggested that the factors of geographic environment etc. may be responsible for occurrence of the disease.