Prognosis, not diagnosis, decides whether treatment helps
For couples with a genuinely poor outlook, the same treatments work well.
The previous topic could easily be misread as "fertility treatment does not work". It does not say that. It says that for the average couple carrying the label "unexplained", the average treatment does not clearly beat waiting. That average hides a real split.
In three trials covering 725 couples with a poor prognosis for natural conception, the picture reverses completely:
| Compared with waiting, in poor-prognosis couples | Odds ratio (95% CI) | Certainty |
|---|---|---|
| Stimulation plus insemination | 4.48 (2.00 to 10.1) | Moderate |
| IVF or ICSI | 4.99 (2.07 to 12.04) | Moderate |
And in the other direction: 253 couples with unexplained infertility and an intermediate prognosis, defined as a 30% to 40% chance of spontaneous ongoing pregnancy within twelve months, were randomized to six months of stimulated insemination or six months of waiting. Ongoing pregnancy was 23% with treatment and 27% with waiting. The authors concluded that a large benefit can be excluded
and that six months of expectant management is therefore justified in these couples.
A fertility clinic can estimate this from your age, how long you have been trying, whether you have conceived before, and the test results. If your natural prognosis is good, the evidence says treatment adds little. If it is poor, the same treatments work. Being told which group you are in is the difference between an informed decision and a default one.