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Table 3 The technical error of measurements of CRL and MSD of women between 6 and 10 weeks of gestation in Mulago Hospital, Kampala, 2016

From: Measurement error of mean sac diameter and crown-rump length among pregnant women at Mulago hospital, Uganda

Paired set of measurements Absolute TEM* VAV* Relative TEM* (%) Classification
Intra-observer variation (CRL*)
 Observer 1 0.72 15.54 4.62 Acceptable
 Observer 2 0.58 15.81 3.70 Acceptable
Inter-observer variation
 CRL* 0.92 15.66 5.88 Acceptable
 MSD* 1.74 29.36 5.93 Acceptable
  1. *TEM Technical error of measurement, *VAV Variable average value, *CRL Crown-rump length, *MSD Mean sac diameter