Paule-Mandel iterative estimate of between random effect variance
implementation follows DerSimonian and Kacker 2007 Appendix 8
see also Kacker 2004
- Parameters:
- eff
ndarray Effect sizes.
- var_eff
ndarray Variance of effect sizes.
- tau2_start
float, optional Starting value for iteration.
- atol
float, optional Convergence tolerance for absolute value of estimating equation.
Default is 1e-5.
- maxiter
int, optional Maximum number of iterations.
- Returns:
- tau2
float Estimate of random effects variance tau squared.
- convergedbool
True if iteration has converged.