多元logistic回归实习题.doc

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1、.多元logistic回归1.下面是子宫膜癌的病例对照研究数据，暴露因素是雌激素。分组使用过雌激素未使用过雌激素病例组55（a）128（b）对照组19（c）164（d）问题：使用过雌激素是否是子宫膜癌的危险因素？危险强度为多少？2.为了探讨糖尿病与血压、血脂等因素的关系，研究者对56例糖尿病病人和65例对照者进行病例-对照研究，收集了性别、年龄、学历、体重指数、家族史、吸烟、血压、总胆固醇、甘油三脂、高密度脂蛋白、低密度脂蛋白11个因素的资料，各因素的观察结果见下表。问题：糖尿病的相关因素有哪些？

2、如何解释相关因素的作用大小？如何评价模型优劣？因素变量名赋值性别X1男=1，女=2年龄X2学历X3小学以下=1，小学=2，初中=3，高中=4，大专及以上=5体重指数X4<24=1，24~<26=2，26~=3家族史X5无=1，有=2吸烟X6不吸=1吸=2血压X7正常=1,高=2总胆固醇X8甘油三脂X9高密度脂蛋白X10低密度脂蛋白X11糖尿病Y对照=0，病例=1编号性别年龄学历体重指数家族史吸烟血压总胆固醇甘油三脂高密度脂蛋白低密度脂蛋白糖尿病1160221114.301.501.242.3002

3、148321114.601.321.152.3003263211124.601.151.152.3004168322114.151.431.073.2105145212113.421.220.632.3006145332114.160.960.982.6507159211114.321.021.053.4908168331113.801.422.860.8509263221113.871.552.440.81010258221115.420.874.463.14011144222124.351.0

4、15.132.20012146311213.421.261.400.28013262121123.181.381.670.48014265121113.300.851.920.69015258211124.411.052.971.790..16122512225.101.633.240.96017169111215.091.503.290.75018255211123.981.410.664.25019266121114.271.352.301.05020147212114.191.242.491

5、.65021247322114.191.042.431.02022264222114.471.603.010.95023263121114.231.504.041.14024164111214.161.441.631.95025170221214.771.081.792.69026148121113.781.001.192.63027264211115.201.561.211.28028147222124.251.063.340.94029254421123.561.351.240.8803025

6、7121114.801.263.190.93031145221114.650.922.990.79032162221124.231.153.281.07033152122123.700.852.552.97034250221114.111.232.541.67035250232213.851.352.341.09036158311113.011.081.861.14037154321213.021.231.550.40038160132114.161.022.460.80039260211125.

7、121.313.501.11040263311114.301.402.800.97041165222113.670.722.290.66042137321115.461.453.560.94043252221124.351.133.861.11044246131113.600.872.271.00045263122123.160.682.301.23046263222123.821.361.981.18047260322114.631.282.460.33048158221124.050.852.

8、600.77049265311123.801.421.850.79050143222114.981.485.071.03051158122215.041.133.770.77052261421113.530.741.660.55053146421123.501.531.940.44054158222114.830.832.820.96055254421112.881.041.580.55056245122113.311.691.630.72057238221124.131.383.