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Table 3 Number of women with abnormal RI who attended high-risk clinic referral

From: Implementation of continuous-wave Doppler ultrasound to detect the high-risk foetus in the low-risk mother: lessons from South Africa

 

Recruited

Normal RI

Abnormal RI

AEDF

Abnormal RI attended HR clinic

Site

(N = 7088)

n

(N = 6169)

n (%)

(N = 919)

n (%)

(N = 87)

n (%)

(N = 730)

n (%)

A

1111

883 (79.5)

228 (20.5)

10 (0.90)

157 (69.0)

B

509

467 (91.7)

42 (8.3)

6 (1.18)

32 (76.2)

C

476

449 (94.3)

27 (5.7)

4 (0.84)

22 (81.5)

D

673

616 (91.5)

57 (8.5)

7 (1.04)

52 (91.2)

E

629

520 (82.7)

109 (17.3)

9 (1.43)

98 (89.9)

F

1097

972 (88.6)

125 (11.4)

10 (0.9)

125 (100)

G

982

919 (93.6)

63 (6.4)

14 (1.4)

47 (74.6)

H

749

582 (77.7)

167 (22.3)

18 (2.4)

107 (64.1)

I

862

761 (88.3)

101 (11.7)

9 (1.0)

90 (89.1)

Total

7088

6169 (87.0)

919 (13.0)

87 (1.2)

730 (79.4)

  1. RI, resistance index; AEDF, absent end diastolic flow; HR, high-risk