1、文档仅供参考,不能作为科学依据,请勿模仿;如有不当之处,请联系本人改正。分析方法定量资料定量资料 均数比较:均数比较: t 检验、方差分析、线性回归检验、方差分析、线性回归定性资料定性资料 率的比较率的比较(卡方检验,趋势卡方检验,二分类卡方检验,趋势卡方检验,二分类logistic回归回归)等级资料等级资料 中位数比较中位数比较(秩和检验,有序秩和检验,有序logistic回归回归) 文档仅供参考,不能作为科学依据,请勿模仿;如有不当之处,请联系本人改正。实例分析实例分析1:某地肝癌成组病例对照研究文档仅供参考,不能作为科学依据,请勿模仿;如有不当之处,请联系本人改正。文档仅供参考,不能作为
2、科学依据,请勿模仿;如有不当之处,请联系本人改正。分析框架1 基本情况的描述(均衡性检验)2 对影响因素进行单因素分析3 对影响因素进行多因素分析4 交互作用分析文档仅供参考,不能作为科学依据,请勿模仿;如有不当之处,请联系本人改正。1 基本情况的描述:性别分布文档仅供参考,不能作为科学依据,请勿模仿;如有不当之处,请联系本人改正。1 基本情况的描述:年龄分布文档仅供参考,不能作为科学依据,请勿模仿;如有不当之处,请联系本人改正。1 基本情况的描述:年龄分布R Re ep po or rt tage58.7717612.694309357.6217012.680279058.2034612.6
3、822793case12TotalMeanNStd. DeviationMinimumMaximum文档仅供参考,不能作为科学依据,请勿模仿;如有不当之处,请联系本人改正。1 基本情况的描述本次调查共收集肝癌病 例、对照 例。其中病例组男 例,女 例,年龄 岁,平均( )岁。对照组男 例,女 例,年龄 岁,平均( )岁。经均衡性检验,病例与对照在年龄、性别差异无统计学意义(P0.05)文档仅供参考,不能作为科学依据,请勿模仿;如有不当之处,请联系本人改正。2 对影响因素进行单因素分析根据case变量,产生因变量y赋值: 病例=1 对照=0文档仅供参考,不能作为科学依据,请勿模仿;如有不当之处,
4、请联系本人改正。2 对影响因素进行单因素分析文档仅供参考,不能作为科学依据,请勿模仿;如有不当之处,请联系本人改正。V Va ar ri ia ab bl le es s i in n t th he e E Eq qu ua at ti io on n1.709.30132.2721.0005.5223.0629.956-2.092.37231.5851.000.123ganyanConstantStep1aBS.E.WalddfSig.Exp(B)LowerUpper95.0% C.I.for EXP(B)Variable(s) entered on step 1: ganyan.a. V
5、 Va ar ri ia ab bl le es s i in n t th he e E Eq qu ua at ti io on n.574.2177.0011.0081.7751.1602.714-.850.3515.8581.016.427drinkConstantStep1aBS.E.WalddfSig.Exp(B)LowerUpper95.0% C.I.for EXP(B)Variable(s) entered on step 1: drink.a. Variables in the EquationVariables in the Equation.404.2253.2351.0
6、721.498.9642.327-.631.3852.6811.102.532smokeConstantStep1aBS.E.WalddfSig.Exp(B)LowerUpper95.0% C.I.for EXP(B)Variable(s) entered on step 1: smoke.a. V Va ar ri ia ab bl le es s i in n t th he e E Eq qu ua at ti io on n-.046.311.0221.882.955.5191.756.092.369.0631.8021.097sexConstantStep1aBS.E.WalddfS
7、ig.Exp(B)LowerUpper95.0% C.I.for EXP(B)Variable(s) entered on step 1: sex.a. 文档仅供参考,不能作为科学依据,请勿模仿;如有不当之处,请联系本人改正。Edu2您的教育程度是: 1=小学及以下 2=初中 3=高中及以上Yusheng2您吃鱼生(或虾生,螺生等)吗? 0:从不吃 或小于1次/月 1: 15次/月 或610次/月 或11次/月及以上V Va ar ri ia ab bl le es s i in n t th he e E Eq qu ua at ti io on n1.6952.429.450.3461.6
8、931.1931.569.7963.090.386.3761.0521.3051.471.7043.072-.345.3171.1831.277.708edu2edu2(1)edu2(2)ConstantStep1aBS.E.WalddfSig.Exp(B)LowerUpper95.0% C.I.for EXP(B)Variable(s) entered on step 1: edu2.a. V Va ar ri ia ab bl le es s i in n t th he e E Eq qu ua at ti io on n-.301.360.6971.404.740.3661.499.2
9、88.342.7091.4001.333yusheng2ConstantStep1aBS.E.WalddfSig.Exp(B)LowerUpper95.0% C.I.for EXP(B)Variable(s) entered on step 1: yusheng2.a. 文档仅供参考,不能作为科学依据,请勿模仿;如有不当之处,请联系本人改正。2 对影响因素进行单因素分析文档仅供参考,不能作为科学依据,请勿模仿;如有不当之处,请联系本人改正。卡方检验文档仅供参考,不能作为科学依据,请勿模仿;如有不当之处,请联系本人改正。卡方检验文档仅供参考,不能作为科学依据,请勿模仿;如有不当之处,请联系本人改
10、正。卡方检验C Ch hi i- -S Sq qu ua ar re e T Te es st ts s.022b1.882.00011.000.0221.8821.000.502.0221.882351Pearson Chi-SquareContinuity CorrectionaLikelihood RatioFishers Exact TestLinear-by-LinearAssociationN of Valid CasesValuedfAsymp. Sig.(2-sided)Exact Sig.(2-sided)Exact Sig.(1-sided)Computed only fo
11、r a 2x2 tablea. 0 cells (.0%) have expected count less than 5. The minimum expected count is 23.52.b. CrosstabCrosstab14815530386.0%86.6%86.3%24244814.0%13.4%13.7%172179351100.0%100.0%100.0%Count% within yCount% within yCount% within y12sexTotal.001.00yTotal文档仅供参考,不能作为科学依据,请勿模仿;如有不当之处,请联系本人改正。趋势卡方检验
12、Chi-Square TestsChi-Square Tests1.712a2.4251.7182.4241.3471.246348Pearson Chi-SquareLikelihood RatioLinear-by-LinearAssociationN of Valid CasesValuedfAsymp. Sig.(2-sided)0 cells (.0%) have expected count less than 5. Theminimum expected count is 20.15.a. 卡方检验趋势卡方检验CrosstabCrosstab9911020957.9%62.1%6
13、0.1%48509828.1%28.2%28.2%24174114.0%9.6%11.8%171177348100.0%100.0%100.0%Count% within yCount% within yCount% within yCount% within y1.002.003.00edu2Total.001.00yTotal文档仅供参考,不能作为科学依据,请勿模仿;如有不当之处,请联系本人改正。2 对影响因素进行单因素分析文档仅供参考,不能作为科学依据,请勿模仿;如有不当之处,请联系本人改正。3 对影响因素进行多因素分析文档仅供参考,不能作为科学依据,请勿模仿;如有不当之处,请联系本人改
14、正。3 对影响因素进行多因素分析V Va ar ri ia ab bl le es s i in n t th he e E Eq qu ua at ti io on n-.497.3841.6761.196.609.2871.291.594.2366.3651.0121.8121.1422.8761.712.30431.7331.0005.5383.05310.045-2.577.60218.3071.000.076yusheng2drinkganyanConstantStep1aBS.E.WalddfSig.Exp(B)LowerUpper95.0% C.I.for EXP(B)Varia
15、ble(s) entered on step 1: yusheng2, drink, ganyan.a. 文档仅供参考,不能作为科学依据,请勿模仿;如有不当之处,请联系本人改正。3 对影响因素进行多因素分析文档仅供参考,不能作为科学依据,请勿模仿;如有不当之处,请联系本人改正。4 交互作用产生交互作用项:drink-ganyan=drink*ganyan文档仅供参考,不能作为科学依据,请勿模仿;如有不当之处,请联系本人改正。4 交互作用交互作用无统计学意义(P=0.118).V Va ar ri ia ab bl le es s i in n t th he e E Eq qu ua at t
16、i io on n1.726.7695.0291.0255.6151.24325.3723.2361.0589.3491.00225.4233.195202.293-.976.6242.4441.118.377.1111.281-4.7781.29113.7041.000.008drinkganyandrink_ganyanConstantStep1aBS.E.WalddfSig.Exp(B)LowerUpper95.0% C.I.for EXP(B)Variable(s) entered on step 1: drink, ganyan, drink_ganyan.a. 文档仅供参考,不能作
17、为科学依据,请勿模仿;如有不当之处,请联系本人改正。4 交互作用若存在交互作用,可进一步分层比较:文档仅供参考,不能作为科学依据,请勿模仿;如有不当之处,请联系本人改正。变量赋值drink: 无=1 有=2ganyan2:无=1 有=3Sum=drink+ganyu2文档仅供参考,不能作为科学依据,请勿模仿;如有不当之处,请联系本人改正。文档仅供参考,不能作为科学依据,请勿模仿;如有不当之处,请联系本人改正。s su um m * * y y C Cr ro os ss st ta ab bu ul la at ti io on n843812249.1%22.5%35.9%706713740
18、.9%39.6%40.3%626323.5%15.4%9.4%1138496.4%22.5%14.4%171169340100.0%100.0%100.0%Count% within yCount% within yCount% within yCount% within yCount% within y2.003.004.005.00sumTotal.001.00yTotal文档仅供参考,不能作为科学依据,请勿模仿;如有不当之处,请联系本人改正。回归结果:sum以分类变量进入模型V Va ar ri ia ab bl le es s i in n t th he e E Eq qu ua a
19、t ti io on n39.8423.000-2.033.39426.5871.000.131.060.284-1.283.38311.2501.001.277.131.587.227.568.1591.6901.254.4123.8171.240.34213.1101.0003.455sumsum(1)sum(2)sum(3)ConstantStep1aBS.E.WalddfSig.Exp(B)LowerUpper95.0% C.I.for EXP(B)Variable(s) entered on step 1: sum.a. 文档仅供参考,不能作为科学依据,请勿模仿;如有不当之处,请联系
20、本人改正。实例分析实例分析2:某地低出生体重的1:1匹配病例对照研究文档仅供参考,不能作为科学依据,请勿模仿;如有不当之处,请联系本人改正。具体步骤Analyze Survival Cox RegressionTime框:time (指定虚拟的生存变量)Status框:low (选入生存状态变量)Define event:single value: 1:continue (“1表示出现观察结局”)Strata框:pairid (指定分层变量)Options框CI for exp(B)OK文档仅供参考,不能作为科学依据,请勿模仿;如有不当之处,请联系本人改正。文档仅供参考,不能作为科学依据,请勿
21、模仿;如有不当之处,请联系本人改正。文档仅供参考,不能作为科学依据,请勿模仿;如有不当之处,请联系本人改正。分析结果母亲妊娠期间吸烟(OR=3.05,95%CI 1.26-7.40)和既往早产史(OR=4.19,95%CI 1.22-14.39)均是新生儿低出生体重的危险因素。V Va ar ri ia ab bl le es s i in n t th he e E Eq qu ua at ti io on n1.114.4536.0561.0143.0461.2557.3961.433.6295.1931.0234.1931.22214.387-.009.0071.4371.231.991.9781.005smokeptdlwtBSEWalddfSig.Exp(B)LowerUpper95.0% CI for Exp(B)