Does agricultural cooperative membership improve farm productive performance? A meta‐regression analysis
通过元回归分析80项研究的332个估计值，发现关于合作社成员身份对农场生产绩效影响的文献存在严重的正向出版偏倚；校正后平均效应虽显著但很小，且对产量的影响强于对技术效率的影响。
Abstract In this article, we provide a quantitative review of the literature on the effect of cooperative membership on farms productive performance. Based on a dataset composed of 332 estimates from 80 studies, our meta‐regression analysis suggests that the current literature suffers from a severe positive publication bias. After correcting this bias, the overall average effect of cooperative membership on farms' productive performance is positive and statistically significant, but its magnitude is small to negligible. Interestingly, we find that cooperative membership has a stronger effect on yield than on technical efficiency. We also explore how contextual variables and methodological choices affect the reported estimates in the literature.