Ⅷ．混合综合指数法：
1. 混合综合指数法所用程序文件
*Hospital evaluation by 9 methods; Filename: 9MethodsHos-8.sps.
*--------------------------------------------------------------------------.
*Method-8: Compex Comprehensive Index Method:.
*Kang Xue-Gui: CHN Handbook of Health Mornitering Statistics Report (M),
Beijing: CHN Science Techn. Publishing House, 1996, 194:.

GET FILE='c:spsssav9methodsHos.sav'.
*The variables are made into the same trend (high good); So,
the following "i=100-i" is high good:.
COMPUTE i=100-i.

*The "W" (of each index): 9 index, 1/9=0.1111:.
*When high-better, Xi/Standard; When low-better, Standard/Xi;
The standard =MEAN:.
DESCRIPTIVES VARIABLES=a b c d e f g h i /STATISTICS=MEAN.

COMPUTE ia=a/75.8400.
COMPUTE ib=b/99.0000.
COMPUTE ic=c/80.7780.
COMPUTE id=d/75.0080.
COMPUTE ie=e/88.9640.
COMPUTE if=f/98.6000.
COMPUTE ig=g/89.6680.
COMPUTE ih=h/92.2980.
COMPUTE ii=i/92.4960.

COMPUTE iaa=0.1111*(ia**2).
COMPUTE ibb=0.1111*(ib**2).
COMPUTE icc=0.1111*(ic**2).
COMPUTE idd=0.1111*(id**2).
COMPUTE iee=0.1111*(ie**2).
COMPUTE iff=0.1111*(if**2).
COMPUTE igg=0.1111*(ig**2).
COMPUTE ihh=0.1111*(ih**2).
COMPUTE iii=0.1111*(ii**2).
COMPUTE y=SQRT(iaa+ibb+icc+idd+iee+iff+igg+ihh+iii).

*The highest "Y" is the best point:.
RANK /VARIABLES=y(D) /RANK INTO No.
FORMATS No(F3.0).
SORT CASESE BY No(A).
FORMATS y(F6.3).
LIST VARIABLES=hos y No /FORMAT=NUMBERED /CASES=FROM 1 TO 5.
*-----------------------------------------------------------------------------.
2. 混合综合指数法的计算方法、步骤
与加权线性综合指数法和乘法合成综合指数法类似，计算综合指数Y ：
Y=(Σ(Wj(Xij’/ Mean(Xj))2))0.5
Wj 为各指标的权数；Xij’ 为经过相对化处理后的实际值；Mean(Xj) 为各指标的均数；Y为用于评价该评价单元的综合指数。
3. 混合综合指数法的评价结果
运行程序文件后可算出各医院的综合指数 Y， 综合指数越大说明该医院的感染管理质量越好，5 家医院从好到差依次为 T—R—S—Q—P，见表 5-2。
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HOS Y NO
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1 T 1.054 1
2 R 1.047 2
3 S 1.019 3
4 Q 0.960 4
5 P 0.927 5
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