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Table 2 The comparison of the baseline characteristics

From: Recurrent ectopic pregnancy as a unique clinical sub group: a case control study

 

Recurrent ectopic

Primary ectopic

 

Mean (±SD) or % (n)

Mean (±SD) or % (n)

p value

Mean difference or odds ratio

95 % CI

Baseline characteristics of women with EP

 Agea

32.2 (5.08)

30.5 (5.83)

0.0049

−1.65

−2.78 to −0.51

 Parity 1b

     

 P0

37.5 (33/88)

44.7 (327/732)

0.2127

0.7431

0.471 to 1.172

 P1–P3

54.5 (48/88)

51.8 (379/732)

0.6526

1.118

0.717 to 1.742

 P4 or more

8.0 (7/88)

3.6 (26/732)

0.0755

2.347

0.9872 to 5.578

 Gestationa

5.99 (1.08)

6.52 (1.81)

0.0001

0.5402

0.2728 to 0.8076

Risk factors for EP in women with primary and recurrent EP

 Smoking

18.7 (17/91)

14.6 (108/741)

0.3498

1.346

0.7650 to 2.370

 Previous tubal surgery

61.4 (54/88)

3.5 (26/740)

<0.0001

43.62

24.40 to 77.97

 Previous pelvic surgery

53.8 (49/91)

14.0 (104/743)

<0.0001

7.168

4.519 to 11.37

 Previous miscarriage

27.5 (25/91)

24.1 (179/742)

0.5185

1.191

0.7297 to 1.945

 Previous TOP

14.3 (13/91)

18.7 (139/743)

0.3875

0.7242

0.3913 to 1.340

 Assisted reproduction

3.3 (3/91)

4.3 (32/743)

1.0

0.7575

0.2272 to 2.526

 Previous infertility

12.1 (11/91)

7.8 (58/743)

0.1602

1.624

0.8186 to 3.222

 Previous PID

8.8 (8/91)

7.7 (57/742)

0.6794

1.158

0.5339 to 2.513

 IUD

0 %

1.3 % (10/733)

0.6121

2.62

0.1521 to 45.11

 Mirena coil

0 %

0.9 % (7/743)

1

1.864

0.1055 to 32.92

Clinical presentation of women with primary and recurrent EP

 Painb

93.4 (85/91)

94.5 (705/746)

0.63

0.8239

0.3397 to 1.998

 Bleedingb

80.2 (73/91)

85.0 (634/746)

0.2239

0.7164

0.4118 to 1.246

 Vomitingb

7.7 (7/91)

9.7 (72/746)

0.7041

0.7801

0.3475 to 1.751

 Diarrhoeab

0 (0/91)

1.9 (14/746)

0.3849

0.2761

0.01632 to 4.670

 Shoulder tip painb

4.4 (4/91)

10.5 (78/745)

0.0899

0.3932

0.1404 to 1.101

 Syncopal attackb

6.6 (6/91)

11.1 (83/745)

0.2112

0.563

0.2385 to 1.329

 1st βHCGa

3176 (7350)

6243 (12,282)

0.0099

3053

750 to 5355

 TVSb

95.6 (87/91)

88.3 (651/737)

0.0323

0.348

0.1246 to 0.9724

 TASb

12.1 (11/91)

17.1 (126/738)

0.2943

1.497

0.7747 to 2.894

 Both TVS and TASb

11.0 (10/91)

12.0 (88/735)

1

1.102

0.5505 to 2.205

Ultrasound scan findings

 Adnexal massb

84.6 (77/91)

88.6 (643/726)

0.3007

1.409

0.7624 to 2.602

 Gest sacb

24.2 (22/91)

20.3 (148/730)

0.4104

0.7976

0.4776 to 1.332

 FHb

12.1 (11/91)

8.9 (65/730)

0.3363

0.7109

0.3602 to 1.403

 PoD fluidb

68.1 (62/91)

76.3 (557/730)

0.094

1.506

0.9385 to 2.417

  1. The comparison of the baseline characteristics, risk factors, the clinical presentations and ultrasound scan findings of women presenting with primary EP compared with recurrent EP
  2. TVS transvaginal ultrasound scan, TAS transabdominal ultrasound scan, PID pelvic inflammatory disease, IUD intrauterine device, FH fetal heartbeat, PoD pouch of douglas
  3. aData shown as mean (SD) and analysed by Student’s t test, with mean difference and 95 % confidence interval
  4. bData shown as % and analysed by Fisher’s exact test with Odds ratio (OR) and 95 % confidence interval
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