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A linear relationship was observed between FT and BPD, HC, AC, FL and CRL (P Forty-7 females at 10–sixteen finished days of being pregnant had been hired. The brand new imply and you will standard departure of their ages, gravidity and you will parity have been thirty-two.2±cuatro.3 years, dos.3±step one.5 and you can 0.7±0.7, respectively. The fetal FT (mm) is plotted against the GA (weeks), as shown in Figure 2. The BPD, HC, AC, FL and CRL (mm) are plotted against FT in Figures 3–7, respectively. 001). The graphs of fetal FL to FT ratio against the FT and the GA are shown in Figures 8 and 9, respectively. The graph of the ratio of FL to AC against the GA is shown in Figure 10. The regression models for Figures 2–7 are shown within the legend for each figure and are summarized in Table 1. The Pearson coefficient is 0.992 for intraobserver correlation (P Figure 2 The graph of the estimated GA against the fetal FT.Notes: The estimated GA showed a positive linear relationship with fetal FT. The regression equation is as follows: GA (weeks) =0.335? FT (mm) +8.845. Adjusted R 2 =0.816, R=0.90, P Notes: The Florida/Air cooling ratio grows to your GA when you look at the a keen inverse matchmaking Figure 3 The graph of fetal BPD against the FT.Notes: The fetal BPD showed a positive linear relationship with fetal FT. The regression equation is as follows: BPD (mm) =1.243? FT (mm) +7.539. Adjusted R 2 =0.945, R=0.97, P Figure 4 The graph of fetal HC against the FT. The regression equation is as follows: HC (mm) =4.407? FT (mm) +. Adjusted R 2 =0.95, R=0.97, P Notes: The new fetal HC displayed a confident linear relationship with fetal Foot Figure 5 The graph of fetal AC against the FT.Notes: The fetal AC showed a positive linear relationship with fetal FT. The regression equation is as follows: AC (mm) =3.835? FT (mm) +. Adjusted R 2 =0.943, R=0.97, P Figure 6 The graph of fetal FL against the FT.Notes: The fetal FL showed a positive linear relationship with fetal FT. The regression equation is as follows: FL (mm) =1.029? FT (mm) ?3.807. Adjusted R 2 =0.937, R=0.97, P Figure 7 The graph of the fetal CRL against the fetal FT.Notes: The fetal CRL showed a positive linear relationship with fetal FT. The regression equation is as follows: CRL (mm) =4.291? FT (mm) +. Adjusted R 2 =0.798, R=0.89, P Figure 8 The fetal FL/FT ratio against the FT.Notes: The FL/FT ratio increases in an inverse relationship with the FT. The ratio approaches 0.9 when the FL is around 25 mm. R 2 =0.49, R=0.7, P Figure 9 The graph of FL/FT ratio against the estimated GA.Notes: The FL/FT ratio increases with the estimated GA in an inverse relationship and reaches 0.9 at 17 weeks gestation. R 2 =0.516, R=0.72, P Figure 10 The FL/AC ratio against the GA. The ratio reaches 0.16 beyond 15 weeks gestation. R 2 =0.704, R=0.84, P Table step 1 The brand new linear regression habits predicting fetal parameters utilising the foot length while the predictor variableNote: The new fetal details is measured from inside the millimeters and also the projected gestational many years from inside the months. The fetal FT showed a linear correlation with GA, BPD, HC, AC, FL and CRL between 10 and 16 weeks gestation (P

A linear relationship was observed between FT and BPD, HC, AC, FL and CRL (P<0

Forty-7 females at 10–sixteen finished days of being pregnant had been hired. The brand new imply and you will standard departure of their ages, gravidity and you will parity have been thirty-two.2±cuatro.3 years, dos.3±step one.5 and you can 0.7±0.7, respectively.

The fetal FT (mm) is plotted against the GA (weeks), as shown in Figure 2. The BPD, HC, AC, FL and CRL (mm) are plotted against FT in Figures 3–7, respectively. 001). The graphs of fetal FL to FT ratio against the FT and the GA are shown in Figures 8 and 9, respectively. The graph of the ratio of FL to AC against the GA is shown in Figure 10. The regression models for Figures 2–7 are shown within the legend for each figure and are summarized in Table 1. The Pearson coefficient is 0.992 for intraobserver correlation (P<0.001) and 0.990 for interobserver correlation (P<0.001) in the measurement of fetal FT.

Figure 2 The graph of the estimated GA against the fetal FT.Notes: The estimated GA showed a positive linear relationship with fetal FT. The regression equation is as follows: GA (weeks) =0.335? FT (mm) +8.845. Adjusted R 2 =0.816, R=0.90, P<0.001.Abbreviations: FT, foot length; GA, gestational age.