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Tableau 7

Analyse multivariée pour le PDLtotal et la dose efficace.

Multivariate analysis for PDLtotal and effective dose.

Tests des effets inter-sujets Variable dépendante ddl D Sig.
Nombre d’acquisitions PDLtotal (mGy.cm) 3 2,433 0,072
  Dose efficace (mSv) 3 3,348 0,023a
Âge PDLtotal (mGy.cm) 3 0,383 0,765
  Dose efficace (mSv) 3 0,318 0,812
Sexe PDLtotal (mGy.cm) 1 0,077 0,782
  Dose efficace (mSv) 1 0,202 0,655
Nombre d’acquisition × Âge PDLtotal (mGy.cm) 8 1,422 0,202
  Dose efficace (mSv) 8 1,572 0,148
Nombre d’acquisition × Sexe PDLtotal (mGy.cm) 3 1,202 0,315
  Dose efficace (mSv) 3 1,334 0,270
Âge × Sexe PDLtotal (mGy.cm) 3 0,835 0,479
  Dose efficace (mSv) 3 0,550 0,650
Nombre d’acquisition × Âge × Sexe PDLtotal (mGy.cm) 3 0,941 0,425
  Dose efficace (mSv) 3 1,088 0,359

R deux (PDLtotal) = 0,335 (R deux ajusté = 0,122). R deux (dose efficace) = 0,363 (R deux ajusté = 0,160).

a

La diminution de nombre d’acquisitions participe à la diminution de la dose : pour une acquisition, les valeurs sont basses.

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