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Table 4 Linear regression equation coefficients for directly predicting corrected measurementa of the anteroposterior (AP) and mediolateral (ML) diameters, and thyroid volume (Tvol) as a function of the original measurements (n = 272).

From: Data quality and practical challenges of thyroid volume assessment by ultrasound under field conditions - observer errors may affect prevalence estimates of goitre

  Beta1(95% CI) Beta0(95% CI)
Right lobe   
ML 0.88 (0.83, 0.94) 0.35 (0.27, 0.43)
AP 1.11 (1.03, 1.20) 0.18 (0.09, 0.26)
Left lobe   
ML 0.87 (0.79, 0.94) 0.45 (0.33, 0.57)
AP 1.18 (1.10, 1.27) 0.01 (-0.07, 0.09)
Tvol 1.42 (1.37, 1.46) 0.01 (-0.25, 0.27)
  1. aCorrected = β1* original + β0