Vanilla on nCPAP: the median moved, the paired effect did not

A blinded crossover trial in 80 caffeine-treated preterm infants found no reduction in desaturation or bradycardia events when vanilla or strawberry scent was applied inside nCPAP masks. Unmeasured odor delivery keeps the null result specific to this method.

THE HOT TAKE

A lower median is not the same as a treatment effect. In this crossover trial, the paired comparison was flat.

A July 2026 randomized, placebo-controlled crossover trial tested scent as an add-on for apnea of prematurity in infants already receiving caffeine and nCPAP. Among 80 infants with primary-outcome data, the median combined number of desaturation and bradycardia events was 10 during the 12-hour odor period and 14 during the 12-hour placebo period—but the prespecified paired comparison was not different (p=0.82).

The chart is deliberately descriptive. Each infant contributed both periods, so the inferential question was the within-infant difference—not the distance between two group medians. The paper reports p=0.82 but no paired effect estimate with a confidence interval; this is neither evidence of benefit nor an equivalence result.