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Table 2 Maternal and neonatal adverse outcomes by maternal age. Percentages and 95 % confidence intervals (CI) shown for a low-risk population of primiparous women, delivering singletons in cephalic version at term (≥37gestational weeks). Norway, 1999 − 2009, n = 169,583

From: Elective cesarean section or not? Maternal age and risk of adverse outcomes at term: a population-based registry study of low-risk primiparous women

Maternal adverse outcomes

Neonatal adverse outcomes

   

Blood

Blood

ICU

Apgar

Apgar

Respiratory

Cerebral

Infections

NICU

   

loss

loss

 

<7, 5 min

<4, 5 min

    
   

500−

>1500

       
   

1500 ml

ml

       

Deliveries, n

  

24,250

1925

327

2200

542

2876

1101

4070

9624

Overall (%)

  

(14.3 %)

(1.1 %)

(0.2 %)

(1.3 %)

(0.3 %)

(1.7 %)

(0.6 %)

(2.4 %)

(5.7 %)

   

% (95 % CI)

% (95 % CI)

% (95 % CI)

% (95 % CI)

% (95 % CI)

% (95 % CI)

% (95 % CI)

% (95 % CI)

% (95 % CI)

<20

9398

5.5

10.6 (10.0-11.2)

0.8 (0.6-1.0)

0.1 (0.1-0.3)

1.1 (0.9-1.3)

0.3 (0.2-0.4)

1.2 (1.0-1.4)

0.5 (0.3-0.6)

1.5 (1.2-1.7)

4.7 (4.3-5.1)

20 − 24

43,658

25.7

12.4 (12.1-12.7)

1.0 (0.9-1.0)

0.1 (0.1-0.2)

1.2 (1.1-1.3)

0.3 (0.2-0.3)

1.5 (1.4-1.6)

0.6 (0.5-0.6)

2.1 (1.9-2.2)

5.2 (5.0-5.4)

25 − 29

67,338

39.7

14.3 (14.1-14.6)

1.1 (1.0-1.2)

0.2 (0.2-0.2)

1.3 (1.2-1.3)

0.3 (0.3-0.4)

1.7 (1.6-1.8)

0.6 (0.6-0.7)

2.3 (2.2-2.4)

5.6 (5.4-5.7)

30 − 34

38,190

22.5

16.2 (15.8-16.6)

1.3 (1.2-1.5)

0.3 (0.2-0.3)

1.4 (1.3-1.6)

0.3 (0.3-0.4)

1.9 (1.8-2.0)

0.7 (0.6-0.8)

1.8 (2.6-3.0)

6.3 (6.1-6.6)

≥35

10,999

6.5

18.3 (17.5-19.0)

1.8 (1.6-2.1)

0.2 (0.2-0.3)

1.8 (1.6-2.1)

0.5 (0.4-0.7)

2.2 (1.9-2.5)

1.0 (0.9-1.2)

3.6 (3.3-4.0)

7.3 (6.8-7.8)

p-trenda

  1. ICU Intensive care unit, NICU Neonatal intensive care unita p-trend < 0.001 for all groups