The Relationship Between the Regional Geographic Environment and the SBP Reference Value of Young Man
Received date: 2011-12-29
Request revised date: 2012-03-19
Online published: 2012-11-20
Copyright
With the change of global climate and ecological environment, more and more people become more concerned with the relationship between the environment and the SBP reference value. This paper discussed the relationship between the SBP reference value of the health adolescent boys and the geographical factors. 8978 cases of the health adolescent boys were collected in 30provinces of China, and the correlation analysis was used to find the correlation of the geographical factors and the SBP reference value of these young men. The SPSS software was used to get the study of these relationships. In order to get the best result, the regression analysis, the curve analysis and the main factor analysis were chosen. In order to get the best result, we chose the regression analysis, the curve analysis and the main factor analysis altogether. Through the Comparison of the Real value and the Predicted value, we got the three different forecast model through these analysis, and then we chose the best forecast model through the comparison of three different models. The result shows there is significant relationship between the geographical factors and SBP reference value. And the forecast model is: YSBP=55.155+0.004 x2+0.712 x3+0.160 x8+0.519 x9.The spatial distribution of the reference SBP value in different areas of China was abstained also. And in order to reveal the distribution regularity of the normal reference value of young men in China and provide a scientific basis for making a unified standard of the normal SBP reference value. we also get the thematic map of the distribution of the reference value in different areas of china, the distribution condition of the SBP value can be clearly reflected through the map, if any one want to read the SBP reference value of different areas of china, we can read the reference value of the adolescent boy’s SBP reference value through the map. This paper give the scientific foundation for making the SBP value. Through all these analysis, we find that the 9 Geographical Variables are all closely related to the normal SBP reference value of chinese young men.
ZHANG Ming-xin , GE Miao . The Relationship Between the Regional Geographic Environment and the SBP Reference Value of Young Man[J]. SCIENTIA GEOGRAPHICA SINICA, 2012 , 32(11) : 1404 -1409 . DOI: 10.13249/j.cnki.sgs.2012.011.1404
Table 1 Correlation between the geographical factors and the SBP reference value表1 区域环境因素与收缩压参考值的相关分析结果 |
区域环境变量 | R 值 | P值 |
---|---|---|
海拔高度(X1) | -0.407 | 0.026 |
年日照时数(X2) | 0.513 | 0.004 |
年平均气温(X3) | -0.216 | 0.252 |
年平均相对湿度(X4) | -0.139 | 0.463 |
年降水量(X5) | -0.183 | 0.332 |
气温年较差(X6) | -0.022 | 0.908 |
年平均风速(X7) | -0.433 | 0.017 |
经度(X8) | 0.576 | 0.001 |
纬度(X9) | 0.432 | 0.017 |
P≤0.01说明相关性很显著;0.01<P≤0.05说明相关性显著;P>0.05说明相关性不显著。 |
Table 2 The model summary and parameter estimation of normal SBP reference value of young man表2 青年男性收缩压正常参考值模型摘要和参数估计 |
模型 | 模型摘要 | 参数估计 | |||||||
---|---|---|---|---|---|---|---|---|---|
R 平方值 | F | df1 | df2 | Sig. | 常数 | b1 | b2 | b3 | |
倒数曲线模型 | 0.316 | 12.962 | 1 | 28 | 0.001 | 134.518 | -2.922E3 | ||
复合曲线模型 | 0.334 | 14.048 | 1 | 28 | 0.001 | 82.998 | 1.002 |
Table 3 Total variance explaination表3 总变量解释 |
变量 | 初始特征值 | 提取最大特征值 | ||||
---|---|---|---|---|---|---|
合计 | 方差百分比(%) | 累积百分比(%) | 合计 | 方差百分比(%) | 累积百分比(%) | |
1 | 3.188 | 35.420 | 35.420 | 3.188 | 35.420 | 35.420 |
2 | 2.553 | 28.370 | 63.789 | 2.553 | 28.370 | 63.789 |
3 | 2.187 | 24.296 | 88.085 | 2.187 | 24.296 | 88.085 |
4 | 0.443 | 4.924 | 93.009 | |||
5 | 0.319 | 3.543 | 96.551 | |||
6 | 0.209 | 2.326 | 98.878 | |||
7 | 0.069 | 0.772 | 99.650 | |||
8 | 0.025 | 0.274 | 99.924 | |||
9 | 0.007 | 0.076 | 100.000 |
Table 4 Component score coefficient matrix表4 因子得分系数矩阵 |
主成分 | |||
---|---|---|---|
地理要素 | 1 | 2 | 3 |
海拔 | -0.469 | -0.311 | -0.687 |
年日照时数 | -0.864 | 0.068 | 0.256 |
年平均气温 | 0.897 | -0.344 | 0.159 |
年平均相对湿度 | 0.348 | 0.784 | -0.495 |
年降水量 | 0.739 | 0.568 | -0.232 |
气温年较差 | 0.171 | -0.792 | 0.550 |
年平均风速 | -0.075 | 0.496 | 0.716 |
经度 | 0.136 | 0.567 | 0.713 |
纬度 | -0.835 | 0.449 | 0.044 |
Fig. 1 The real value and the predicted value of normal SBP reference value of young man图1 青年男性收缩压正常参考值的实测值与预测值 |
Fig. 2 The special distribution of normal SBP reference value of young man图2 青年男性收缩压参考值空间分布规律 |
Table 5 The T test result of the real value and the predicted value of normal SBP reference value of young man表5 青年男性收缩压正常参考值实测值与预测值T检验结果 |
参数 | 多元线性回归模型 | 曲线估计模型 | 主成分分析模型 |
---|---|---|---|
t | 0.000 | 0.074 | 0.000 |
P | 1.000 | 0.942 | 1.000 |
The authors have declared that no competing interests exist.
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