Both regulatory gates are clear and the observation and chart-audit arms have usable data. But every number currently written in Section 4 is mock, and the live data does not say what the draft says it says.
Warmer rooms are associated with colder patients at emergence: Pearson r = −0.221, slope −0.042 °C per °F, p ≈ 0.03. The current draft claims +0.11 °C per °F. Ambient explains under 5% of the variance in emergence core temperature.
The most likely reason is confounding by indication: providers turn the room up for cases they already expect to run cold. All three 76 °F cases were general surgery emerging at 35.7, 35.4, and 35.9. The room was likely warmed because the patient was cold, which reverses the causal arrow.
No arm may claim that warmer rooms produce warmer patients. What survives, and is genuinely the project's contribution, is that ambient OR temperature sits below every published minimum in 79.6% of cases and appears nowhere in the anesthesia record.
These apply to every arm. Settle them together before anyone drafts, so the three papers do not contradict each other in front of the same committee.
What the observation Section 4 currently claims, against what the data shows. Struck values appear in the draft today.
| Metric | In the draft | Actual |
|---|---|---|
| Cases | 500 | 93 |
| Emergence hypothermia | 85.2% | 29.0% |
| Severe hypothermia | ~20% | 1 case |
| Mean emergence core | 35.41 °C | 36.28 °C |
| Ambient mean | 62.6 °F | 66.2 °F |
| Ambient range | 58.3–67.8 °F | 60–76 °F |
| Active warming used | 88.6% | 97.8% |
| Unwarmed cases | 57 | 2 |
| Ambient–core slope | +0.11 °C/°F | −0.042 °C/°F |
| Variance explained | R² = 0.52 | R² = 0.049 |
Drafted for the observation arm. Keagen can mirror the structure with his own figures.
Emergence hypothermia occurred in 29.0% of cases at the ASPAN 36.0 °C threshold. However, threshold sensitivity analysis demonstrates the estimate is unstable at that cut point, ranging from 24.7% to 34.4% across a ±0.1 °C shift, which is precisely the stated accuracy of the monitoring equipment. Nearly half of all cases (47.3%) fell at or below 36.2 °C. Dichotomous classification at 36.0 °C therefore understates the thermal burden observed, and continuous core temperature is reported as the primary outcome. Proposed opening, Results