Empirical evidence of observer bias in randomized clinical trials: updated and expanded analysis of trials with both blinded and non-blinded outcome assessors

Josefina SalazarHelene MoustgaardJavier BracchiglioneAsbjørn Hróbjartsson2026-02-242026-02-242025-0710.1016/j.jclinepi.2025.111787https://cris-uv-2.scimago.es/handle/123456789/8415Empirical evidence of observer bias in randomized clinical trials: updated and expanded analysis of trials with both blinded and non-blinded outcome assessorsjournal-article