Outome/ | Method of | Random intercept | Perc. of non- | Random intercept | Perc. of non- |
---|---|---|---|---|---|
No of clusters | estimation | variance | convergence* | variance | convergence* |
2 covariates | 4 covariates | ||||
death | PQL | 0.5 to 2 | 3 to 0% | 0.5 to 2 | 53 to 0% |
150 | GH | 0.5 to 2 | 0 to 1% | 0.5 to 2 | 0 to 1% |
GEE | 0.5 to 2 | 3 to 1% | 0.5 to 2 | 3 to 1% | |
death | PQL | 0.5 to 2 | ≤ 1% | 0.5 to 2 | ≤ 1% |
500 | GH | 0.5 to 2 | 0% | 0.5 to 2 | 0% |
GEE | 0.5 to 2 | ≤ 2% | 0.5 to 2 | ≤ 1% | |
O 2 dep | PQL | 0.5 to 2 | 0% | 0.5 to 2 | 18 to 0% |
150 | GH | 0.5 | 20 to 27% | 0.5 | 0% |
1 | 19 to 28% | 1 | 0% | ||
2 | 18 to 28% | 2 | 0% | ||
GEE | 0.5 to 2 | 5 to 0% | 0.5 to 2 | 6 to 0% | |
O 2 dep | PQL | 0.5 to 2 | 0% | 0.5 to 2 | 0% |
500 | GH | 0.5 | 37 to 48 | 0.5 | ≤ 1% |
1 | 35 to 46% | 1 | ≤ 1% | ||
2 | 34 to 46% | 2 | ≤ 1% | ||
GEE | 0.5 to 2 | 0% | 0.5 to 2 | ≤ 1% |