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Table 2 Obstetrical and medical characteristics of mothers diagnosed with meconium amniotic fluid

From: The incidence and risk factors of meconium amniotic fluid in singleton pregnancies: an experience of a tertiary hospital in Iran

Variables

CAF

(n = 7803)

MAF

(n = 1085)

Total

(n = 8888)

P value

Obstetrical

Gestational age

   

 < 0.001

Less than 37 weeks

1190 (15.3)

55 (5.1)

1245 (14)

 

37–40 weeks

5685 (72.9)

751 (69.2)

6436 (72.4)

 

40+1–41 weeks

779 (10)

236 (21.8)

1015 (11.4)

 

More than 41 weeks

149 (1.9)

43 (4)

192 (2.2)

 

Parity

   

 < 0.001

Primiparous

2026 (26)

481 (44.3)

2507 (28.2)

 

Multiparous (2–5 parity)

5572 (71.4)

572 (52.7)

6144 (69.1)

 

Grand multiparous (6 parity and more)

205 (2.6)

32 (2.9)

237 (2.7)

 

Oligohydramenios

   

0.091

No

7490 (96)

1016 (93.6)

8506 (95.9)

 

Yes

313 (4)

69 (6.4)

382 (3.7)

 

Newborn Sex

   

0.088

Female

3827 (49)

503 (46.4)

4330 (48.7)

 

Male

3976 (51)

582 (53.6)

4858 (51.3)

 

Preeclampsia

   

0.599

No

7292 (93.5)

1019 (9.9)

8311 (93.5)

 

Yes

511 (6.5)

66 (6.1)

577 (6.5)

 

Placenta abruption

   

0.927

No

7553 (96.8)

1050 (96.8)

8603 (96.8)

 

Yes

250 (3.2)

35 (3.2)

285 (3.2)

 

Placenta abnormalities

   

0.309

No

7769 (99.6)

1083 (99.8)

8852 (99.6)

 

Yes

34 (0.4)

2 (0.2)

36 (0.4)

 

Chorioamnionitis

   

0.423

No

7772 (99.6)

1083 (99.8)

8855 (99.6)

 

Yes

31 (0.4)

2 (0.2)

33 (0.4)

 

Intrauterine growth retardation

   

0.789

No

7450 (96.6)

1059 (97.6)

8599 (96.7)

 

Yes

263 (3.4)

26 (2.4)

289 (3.3)

 

Intrauterine fetal death

   

0.999

No

7769 (99.6)

1081 (99.6)

8850 (99.6)

 

Yes

34 (0.4)

4 (0.4)

38 (0.4)

 

Gestational diabetes

   

 < 0.001

No

6620 (84.4)

950 (87.6)

7570 (85.2)

 

Yes

1183 (15.6)

135 (12.4)

1318 (14.8)

 

Comorbidities

Infertility

   

0.379

No

7780 (99.7)

1080 (99.5)

8860 (99.7)

 

Yes

23 (0.3)

5 (0.5)

28 (0.3)

 

Anemia

   

0.454

No

7569 (97)

1062 (97.9)

8631 (97.1)

 

Hemoglobin 7–10

133 (1.7)

13 (1.2)

146 (1.6)

 

Hemoglobin less than 7

101 (1.3)

10 (0.9)

111 (1.3)

 

Cardiovascular disease

   

0.343

No

7716 (98.9)

1077 (99.3)

8793 (98.9)

 

Yes

87 (1.1)

8 (0.7)

95 (1.1)

 

Pyelonephritis

   

0.607

No

7795 (99.9)

1085 (100)

8880 (99.9)

 

Yes

8 (0.1)

0

8 (0.1)

 

Drug addiction

   

0.201

No

7755 (99.4)

1083 (99.8)

8838 (99.5)

 

Yes

48 (0.6)

2 (0.2)

50 (0.5)

 

Chronic Hypertension

   

0.063

No

7711 (98.8)

1079 (99.4)

8790 (98.9)

 

Yes

92 (1.2)

6 (0.6)

98 (1.1)

 

COVID-19

   

0.189

No

7687 (98.5)

1053 (98)

8750 (98.4)

 

Yes

116 (1.5)

22 (2)

138 (0.6)

 

Overt Diabetes

   

0.049

No

7778 (99.6)

1085 (100)

8858

 

Yes

30 (0.4)

0

30

 

Thyroid dysfunction

   

0.751

No

6985 (89.5)

968 (89.2)

7953 (89.5)

 

Yes

818 (10.5)

117 (10.8)

935 (10.5)

 
 

Hepatitis

   

0.986

No

7775 (99.6)

1082 (99.7)

8857 (99.7)

 

Yes

28 (0.4)

3 (0.3)

31 (0.3)

 
  1. Data are presented as numbers (%)
  2. MAF Meconium amniotic fluid, CAF Clear amniotic fluid