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Table 2 Characteristics of the obstetric population, medical and obstetric conditions by hospital peer-group in Iran, 21 March 2019–21 March 2021

From: Cesarean delivery in Iran: a population-based analysis using the Robson classification system

Characteristics

Public

Private

Other Hospitals

Total Hospitals

n (%) a

n (%) a

n (%) a

n (%) a

Age (years)

< 18

60,230 (4.6)

5224 (1.1)

13,302 (2.5)

78,756 (3.4)

18–35

993,561 (75.3)

346,966 (73.9)

410,461 (76.9)

1,750,988 (75.4)

> 35

265,347 (20.2)

117,218 (25)

110,191 (20.6)

492,756 (21.2)

Education Level

Low literacy

649,544 (49.2)

30,568 (6.5)

119,523 (22.4)

799,635 (34.4)

High School and Associate Degree

533,233 (40.4)

194,194 (41.4)

291,971 (54.7)

1,019,398 (43.9)

Bachelor and Above

140,624 (10.7)

249,907 (53.2)

123,917 (23.2)

514,448 (22.2)

Unknown

17,487 (1.3)

3370 (0.7)

5578 (1)

26,435 (1.1)

Nationality

Iranian

1,230,293 (93.3)

462,596 (98.6)

502,877 (94.2)

2,195,766 (94.5)

Immigrant

88,845 (6.7)

6812 (1.4)

31,077 (5.8)

126,734 (5.5)

Obstetric and Medical Conditions

Preeclampsia/ Eclampsia

35,419 (2.7)

7986 (2.7)

8311 (1.6)

51,716 (2.2)

Gestational Diabetes

59,897 (4.5)

29,748 (6.3)

25,914 (4.9)

115,559 (5)

Thyroid Disorders

96,336 (7.3)

77,749 (16.6)

57,665 (10.8)

231,750 (10)

Hypertension

22,027 (1.7)

6931 (1.5)

6489 (1.2)

35,447 (1.5)

Heart Disease

8385 (0.6)

4552 (1)

4257 (0.8)

17,194 (0.7)

Obstetric Interventions

Oxytocin

158,698 (12)

30,920 (6.6)

62,239 (11.7)

251,857 (10.8)

Vaginal Operative Delivery b

7608 (1)

2569 (2.6)

4905 (1.9)

15,082 (1.3)

Episiotomy b

268,953 (35.2)

49,683 (49.4)

89,100 (34.4)

407,736 (36.3)

Medical Pain Relief for Labour

52,590 (4)

18,083 (3.9)

38,101 (7.1)

108,774 (4.7)

Non-medical Pain Relief for Labour

199,665 (15.1)

28,462 (6)

86,795 (16.3)

314,922 (13.6)

Obstetric complications

Blood Transfusion

4896 (0.4)

742 (0.2)

1010 (0.2)

6648 (0.3)

3rd to 4th degree Perineal Tear b

1382 (0.2)

141 (0.1)

292 (0.1)

1815 (0.2)

Gestational Age (weeks) c

< 32

31,279 (2.3)

3791 (0.8)

5083 (0.9)

40,153 (1.7)

32–36

126,055 (9.4)

29,388 (6.2)

29,656 (5.5)

185,099 (7.8)

≥37

1,183,554 (88.3)

444,860 (93)

506,250 (93.6)

2,134,664 (90.5)

Birth weight (g) c

< 500

3105 (0.2)

630 (0.1)

882 (0.2)

4617 (0.2)

500–749

7294 (0.5)

1075 (0.2)

1323 (0.2)

9692 (0.4)

750–999

5415 (0.4)

598 (0.1)

831 (0.2)

6844 (0.3)

1000–1499

13,657 (1)

1489 (0.3)

1909 (0.4)

17,055 (0.7)

1500–2499

105,848 (7.9)

25,499 (5.3)

28,533 (5.3)

159,880 (6.8)

2500–3999

1,187,663 (88.6)

442,889 (92.7)

501,279 (92.7)

2,131,831 (90.4)

≥4000

17,586 (1.3)

5788 (1.2)

6144 (1.1)

29,518 (1.3)

Perinatal Outcome c

Apgar < 7 at 5 min

26,839 (2)

3635 (0.8)

4951 (0.9)

35,425 (1.5)

Stillbirth

13,944 (1)

2206 (0.5)

2983 (0.6)

19,133 (0.8)

Neonatal Death (2 h postpartum)

3584 (0.3)

468 (0.1)

609 (0.1)

4661 (0.2)

Admitted to Neonatal Unit

140,136 (10.5)

19,612 (4.1)

30,186 (5.6)

189,934 (8)

Deliveries

1,319,138 (56.8)

469,408 (20.2)

533,954 (23)

2,322,500 (100)

Births

1,340,888 (56.8)

478,039 (20.2)

540,989 (23)

2,359,916 (100)

  1. a The sum of the percentages may not be 100 due to errors introduced by rounding
  2. b Vaginal deliveries are considered as the denominator for calculating the percentages
  3. c Births are considered as the denominator for calculating the percentages