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Quadrants of the cost-effectiveness plane.
| Agent comparison | North-east (more effective but more expensive) | South-west (less effective but less expensive) | North-west (less effective and more expensive i.e. inferior) | South-east (more effective and less expensive i.e. dominant) |
|---|---|---|---|---|
| Letrozole versus Clomiphene citrate | 44.0% | 11.1% | 21.6% | 23.3% |
| Gonadotrophins versus Letrozole | 67.4% | 0% | 32.6% | 0% |
