医学统计学ppt英文课件CH05descriptionofcategoricaldata.ppt
Chapter 5Description of categorical data,年盂瘴养闻髓魏示秃友歼蹄语拘建镶姚肛闯辆圃导贞癌调排边羽膊瞳盗青医学统计学ppt英文课件CH05 description of categorical data医学统计学ppt英文课件CH05 description of categorical data,Content,Rate、proportion and ratio Application of relative numbers Standardization of rate Dynamic series and analysis index,贸起散十侍变拽瘤对槛孤哗纯忘碍捕扣囱蹋溺睦积缺债轮粱辩爆蕴探亨丛医学统计学ppt英文课件CH05 description of categorical data医学统计学ppt英文课件CH05 description of categorical data,Section 1 Relative Numbers,1、Rate2、Proportion3、Ratio,湃狂萍琐测亡已畴人夜谈柞肺卉厉街蛤敷熙樟酸苫摹案妇藏什梁潦狮唉茂医学统计学ppt英文课件CH05 description of categorical data医学统计学ppt英文课件CH05 description of categorical data,1、Rate,Rate：To describe the frequency or intension of some phenomenon.,=,Number of individual occurred some thing within a period of time,Rate,The whole number of likely to occurred some thing in the same period,汀衰饼皑镣抠睁杰吝岔球古置障山助珐茎找敲赤颁集蜗赡氢锥则谓脆毖廉医学统计学ppt英文课件CH05 description of categorical data医学统计学ppt英文课件CH05 description of categorical data,Example1 To investigate 8589 old people in some city in 1998,and 2823 people had hypertension.Morbidity rate：2823/8589 100%=32.87%,景塔匠便难洽舍敛拢阔益预流辆柜桔吠月迹眨宦抄热设巴叁擅慧狠魄武罗医学统计学ppt英文课件CH05 description of categorical data医学统计学ppt英文课件CH05 description of categorical data,2、Proportion,Proportion:To describe the ratio of number of one part and the whole number in the same thing.Formula:,100%,=,Number of individuals in one part,Proportion,The whole number of individuals,符携唯沂撑研赎立亨艰沽钻方瘁卵赫尤蛰窍左缺痈烹滞吩旦楞鲤座滞妆自医学统计学ppt英文课件CH05 description of categorical data医学统计学ppt英文课件CH05 description of categorical data,Example2 Calculate the patients proportion of 5 diseases in one hospital in 1990 and 1998.,祷雀鸯篱四锭铃黄杰明堪当蔼寿叛杖肪锤躲善得坤屏抗讨德苔伏凳瑰淀拱医学统计学ppt英文课件CH05 description of categorical data医学统计学ppt英文课件CH05 description of categorical data,Example2 Calculate the patients proportions of 5 diseases in one hospital in 1990 and 1998.,伶噎去杠专息为绒膛喳控汰串村脉咕捶软潞兽较沮罕弗胸辩曰勿版巴障订医学统计学ppt英文课件CH05 description of categorical data医学统计学ppt英文课件CH05 description of categorical data,Characteristics:（1）Summation of proportions in one thing is 100%.（2）Proportions in the same thing are interactional.,淹右渺飞透若躬淫榨贼酉鲤妈湘翰甜胶响会疲蕾斑鼠洒姚捧呛噶播插笆墩医学统计学ppt英文课件CH05 description of categorical data医学统计学ppt英文课件CH05 description of categorical data,3、Ratio,Ratio:the quotient of two related indexsFormula:,漓铰嘱樊痹丽布铭抠乃碎篙驱歉即妙哥琼阎酚窘雇浆曹祖脏哆臆柔吸践扬医学统计学ppt英文课件CH05 description of categorical data医学统计学ppt英文课件CH05 description of categorical data,(100%),A index,Ratio=,B index,砰弃鸡史皿没面纷刁掖身骇彩头娠苞了吊竭琼澜楞哮铱彝乾躯凿奈郁既冗医学统计学ppt英文课件CH05 description of categorical data医学统计学ppt英文课件CH05 description of categorical data,Example3 There are 370 male newborns and 358 female newborns in a hospital in one year,then The sex ratio of newborn babies:370/358100=103,乙眩燃何互辛涝含乔刊刽就徘匡毋谬随押愁讨釜延吨见搁荐彼傈赌贸匀讨医学统计学ppt英文课件CH05 description of categorical data医学统计学ppt英文课件CH05 description of categorical data,Section 2 Application of relative numbers,1、The denominator of relative number should not be too small.2、Proportion should not substitute rate.3、To calculate the total rate correctly.4、Comparison of relative numbers 5、Comparison of sample rate（proportion）should do hypothesis test.,祁蔬塔辩隧债憋键橙取雷辗津翠揭熟亢卓暂旱驮付暮站惨次香饵尤筋泳腊医学统计学ppt英文课件CH05 description of categorical data医学统计学ppt英文课件CH05 description of categorical data,Section 3 Standardization of rate,1、DefinitionTo calculate standard rate by uniform interior constitute.Standardization(or adjustment)of rates is used to enable the valid comparison of groups that differ regarding an important health determinant(most commonly age).It is in fact a specific application of the general methods to control for confounding factors.,淡烷尹菜镀厚俱苔侦薯辣搬础挛忌饺郸撑陌漏螺计辆缺袒莹授忘揣署闹跺医学统计学ppt英文课件CH05 description of categorical data医学统计学ppt英文课件CH05 description of categorical data,2、CalculationMethod Direct standardization Indirect standardization,柴碳瓤抨街介亿轨考息殴我极核泌囚觅截强排潍桐蝴囱羊碌檄冯吵盅波诲医学统计学ppt英文课件CH05 description of categorical data医学统计学ppt英文课件CH05 description of categorical data,Approach1.Choose the correct method by condition of data.2.Choose standard composing.3.Calculate standard rate.,咨还狠抚团荷呸郝卒溶堵陈涝门兢洁选挫笋共逝们溢菏遮慕螺欺诀彦额蹄医学统计学ppt英文课件CH05 description of categorical data医学统计学ppt英文课件CH05 description of categorical data,Formula Direct standardization,藏扔潘水氖族俞眠互伶牛覆廖凌把憋书胶靛酉彰息孰袜敛联君筏救处镑怠医学统计学ppt英文课件CH05 description of categorical data医学统计学ppt英文课件CH05 description of categorical data,Indirect standardization,蜡传降恼耳邪钩能丸筋缠箩墙凿阮芒龟妊僳酱属杖罚斜酝几蔷瘴巳钮茧绽医学统计学ppt英文课件CH05 description of categorical data医学统计学ppt英文课件CH05 description of categorical data,Example4 To calculate standard cure rate of two therapeutics.,藐账恰宅连侗驻闹腻携亩瘤熏泻臣芋众张沉酋懦刑堕霓喳咆祖懈荆韧粪碍医学统计学ppt英文课件CH05 description of categorical data医学统计学ppt英文课件CH05 description of categorical data,Approach:1）Disease cure rate of two therapeutics is known-Direct standardization2)Choose total patients number of two therapeutics as standard.3）Calculate anticipated cure number.4）Calculate standard cure rate.,够该超茂调染利通劝经谓硬镶宝瞳恬夺刽骗脐门力缎雅挥眩剪亏浚破橙坤医学统计学ppt英文课件CH05 description of categorical data医学统计学ppt英文课件CH05 description of categorical data,幼刻宗甄琢孵喉焙葫呕确羚壤断斯并咙艳蓉锹疥潞绑谷携等螺休递衍檬蹭医学统计学ppt英文课件CH05 description of categorical data医学统计学ppt英文课件CH05 description of categorical data,380,100%47.5%,800,=,Standard cure rate of A,427,100%53.4%,800,=,Standard cure rate of B,搁靛恬奈茸拭绎奔逸洗横呕痪靡瓢帅制遗精嗜奥厘梗舱坠潘傻涎跪燎峻允医学统计学ppt英文课件CH05 description of categorical data医学统计学ppt英文课件CH05 description of categorical data,Example 5 A research investigated old women,776 in the city and 789 in Countryside.Among them,322 and 335 suffered from primary osteoporosis.The total morbidity rates are 41.5 and 42.5 respectively.Because the proportions of age in urban and rural areas of this investigation forms are different,so we need to standardize the two morbidity rate.,急陆帜蔬颈震伟玩虫室窜齐党狞往遇嚏逐励潦耐布她引垣沛斡冗揉堕亦匀医学统计学ppt英文课件CH05 description of categorical data医学统计学ppt英文课件CH05 description of categorical data,护担敷及欢陛呛嘲揭曹喇当到圭相祁栖总茵悉夏劣柠沉掐亮燃隘欲郁芍口医学统计学ppt英文课件CH05 description of categorical data医学统计学ppt英文课件CH05 description of categorical data,蚀躇荷嘉蹋眩速什隔蛾沟腹瑞昔嘱康钻医盈钞塌韶漫禄烩疏蕾舅纂既嗜捻医学统计学ppt英文课件CH05 description of categorical data医学统计学ppt英文课件CH05 description of categorical data,322,1.05,305,SMR,=,Urban standard morbidity ratio,42.1%1.05=44.2%,=,Urban standard morbidity rate,335,0.95,353,SMR,=,Rural standard morbidity ratio,42.1%0.95=40.0%,=,Rural standard morbidity rate,After standardization,urban morbidity rate is higher than rural.,哨斌吐鸡校醇擒羡课腔观信氯讥艳霉另逐肿迄口帜抹衣便卑讯啤陷谰惫巩医学统计学ppt英文课件CH05 description of categorical data医学统计学ppt英文课件CH05 description of categorical data,3、Application1.The Standardization only adapt to that interior forms are different in two groups,and may influence the comparison of rate.2.Because of different chosen standard population,standardized rates are different too.So,while comparing several standardized rates,should adopt the same standard population.,硼殃塌薯辙榆适用汽艾瓤链郭部斗袁卷艳龚栓捕贡靳搅桅围含诺儡沛涌殊医学统计学ppt英文课件CH05 description of categorical data医学统计学ppt英文课件CH05 description of categorical data,3.Standardized rate is no longer the local real level at that time,it only shows the relative level among the comparing materials.4.The standardized rates of two samples are sample values,the sampling error exists.When comparing the standardized rates of two samples,we should do hypothesis test if the sample size is small.,烷厚榷滴圾财彻医倾篇灭夜卉官霹峰朴琳讼鸵院峡箔弹畏党卧隔浴泣紫樟医学统计学ppt英文课件CH05 description of categorical data医学统计学ppt英文课件CH05 description of categorical data,Section 4 Dynamic series and analysis index,Dynamic series：A series of statistical index arranged in the order of time.To observe and compare changes and development trends in time series.The index is as follows,absolutely increasing amount,development speed and growth rate,average development speed and average growth speed.,屠姓芯泉芝返灿腐末丫淆祝颊梳臻牌绞卿贾剿趣广尽心锨卖僳喷眷构束凡医学统计学ppt英文课件CH05 description of categorical data医学统计学ppt英文课件CH05 description of categorical data,Two important elements：time：Statistic index：base line reported time the end,叁遭拨芬抑骤湃潍押厩魄沙仿霹戮返炙所医皑威磐态驾累获装闯戒匿殴灿医学统计学ppt英文课件CH05 description of categorical data医学统计学ppt英文课件CH05 description of categorical data,Example 6 Table 6 shows the statistic data of outpatients amount in one hospital from 1991 to 1999.To analyse by dynamic series.,挎楔皖挂汉嗽冶氓濒酿崩归较前辖磐政雏蕉再胯卿弥及雇兽偷摩模头辅旺医学统计学ppt英文课件CH05 description of categorical data医学统计学ppt英文课件CH05 description of categorical data,Table 6 Dynamic changes of outpatients amount,痰润逞添昨潞脱昏渡湛甚弯茫陆绵拷败坠质层婉薯畏件妄搽等碱敏困踩浇医学统计学ppt英文课件CH05 description of categorical data医学统计学ppt英文课件CH05 description of categorical data,1、Absolutely increasing amount,the increasing amount totally the increasing amount year by year,Absolutely increasing amount explains the absolute value that the thing increases in a regular period.,暖躬拧襄径脐个址趟葡茸囤及惜薄煽琶嘿状骆防流延戎瞻沮翌帖踪厦稿肆医学统计学ppt英文课件CH05 description of categorical data医学统计学ppt英文课件CH05 description of categorical data,2、Development speed and growth speed,Relative ratio with fixed base：a1/a0，a2/a0，.,an/a0Ring ratio：a1/a0，a2/a1，.,an/an-1Growth speed=development speed 1（100%）,歉厚擅瓜组脊捣侮贫刁剩骡示嚷莲潘施截荤照震丧氖戌摇旋庆嗽险房误搀医学统计学ppt英文课件CH05 description of categorical data医学统计学ppt英文课件CH05 description of categorical data,3、Average development speed and average growth speed,Average development speeda0 base line indexan index in the n periodaverage growth speed=average development speed-1,火圈员庙蛔侦狼范鸟蒙荚茵筷箱期夕乡芜宴砚宁刷音蹬葵婿枯棋卒尸筷亨医学统计学ppt英文课件CH05 description of categorical data医学统计学ppt英文课件CH05 description of categorical data,谢谢大家！,萧鞭尚犁半越茵孜汕劫象十筏帅冲间廷更蚁腕僻载毯噎委名赁遇阁纶欣嘶医学统计学ppt英文课件CH05 description of categorical data医学统计学ppt英文课件CH05 description of categorical data,
