. metan death_des12 n1 death_bms12 n2,fixed or
(7 missing values generated)

Study | OR [95% Conf. Interval] % Weight
-----------------+-------------------------------------------------------
1 | 1.71538 .499321 5.89305 35.2522
2 | .333333 .013418 8.2806 13.0893
3 | 1.26429 .333947 4.78645 34.178
4 | .983333 .136262 7.0962 17.4804
5 | Excluded
-----------------+-------------------------------------------------------
M-H pooled OR | 1.25234 .573855 2.73301
-----------------+-------------------------------------------------------
Heterogeneity chi-squared = 0.96 (d.f. = 3) p = 0.811
Test of OR=1 : z= 0.57 p = 0.572

这个P到底是有异质性还是没有异质性？

在这用固定效应模型是不是不对啊？