There was a clear trend of improved audit performance for more recent dates, and while all photon energies generally showed uniform rates of results out of tolerance, low (6 MeV) and high (≥18 MeV) energy electron beams showed significantly elevated rates.
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Remote beam output audits: a global assessment of results out of tolerance.
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The sentences
While the IAEA trend did not achieve statistical significance (p = 0.07), all other trends were highly significant (p ≪ 0.001).