基本上找到答案了，SPSS与SAS中关于McNemar检验的说明如下：
（1）Spss
McNemar's Test (nonparametric tests algorithms)
For two related samples from a categorical field with 2 values (or a recoded categorical field with more than 2 values), this tests:
H0: The two samples have the same marginal distribution.
Let n1,f be the number of records in which xi is a success and yi is a failure, and n2,f be the number of records in which xi is a failure and yi is a success, incorporating the frequency weights.

The one sided p-value is
p=Pr(χ21≥χ2)=1−Pr(χ21≤χ2)
where χ21 has a chi-square distribution with 1 degree of freedom.
p<α will reject the null hypothesis.

（2）SAS
McNemar’s Test
PROC FREQ computes McNemar’s test for 2 *2 tables when you specify the AGREE option. McNemar’s test is appropriate when you are analyzing data from matched pairs of subjects with a dichotomous (yes-no) response. It tests the null hypothesis of marginal homogeneity, or p1. = p.1. McNemar’s test is computed as
QM = (n12 - n21)^2/ (n12 + n21)
Under the null hypothesis, QM has an asymptotic chi-square distribution with one degree of freedom. See McNemar (1947), as well as the general references cited in the preceding section. In addition to the asymptotic test, PROC FREQ also computes the exact p-value for McNemar’s test when you specify the MCNEM option in the EXACT statement.

从中应该注意三点：
（1）SPSS采用校正公式的切点为25而不是40，同时校正公式的条件为>25，与人卫版卫生统计学说到的条件方向(<40)相反，而<25时采用的是精确概率
（2）SAS中针对配对的四格表资料没有采用人卫版教材提到的校正公式，都统一采用的未校正的公式
（3）SPSS中在配对的四格表分析时是不会报道卡方值的，即使是当B+C>25时，也不会报道卡方值（大家可以尝试一下），只能报告P值。而SAS中报道的S统计量即为人卫版教材中所说的卡方值。

我正想办法找SAS有没有校正的统计量~在此学习了