Table 2: Comparison of repeated Doppler ultrasound and ultrasound in the groups.

 

 

Study group

Control group

P

n (353)

n (248)

Number of ultrasound/Doppler ultrasound viewed

One time

 

169 (68.2%)

0.916

 

Two times

97 (27.5%)

72 (29.0%)

 

 

Three times

10 (2.8%)

7 (2.8%)

 

Chi-square test was used.