Table 2 Frequency distribution and univariate analyses of medical issues in antenatal and perinatal periods among singleton births by maternal age groups in Taiwan

4

(0.3)

0.05 (0.02–0.13)

<0.001

897

(2.3)

0.35 (0.33–0.38)

<0.001

18,663

(6.3)

31

(2.6)

0.82 (0.58–1.18)

0.289

1,032

(2.7)

0.85 (0.80–0.91)

<0.001

9,223

(3.1)

8

(0.7)

1.03 (0.52–2.08)

0.926

262

(0.7)

1.05 (0.92–1.19)

0.474

1,909

(0.7)

3

(0.3)

0.76 (0.24–2.35)

0.629

133

(0.3)

1.04 (0.87–1.25)

0.682

978

(0.3)

42

(3.5)

1.16 (0.85–1.58)

0.347

1,480

(3.8)

1.27 (1.20–1.34)

<0.001

8,976

(3.0)

11

(0.9)

1.93 (1.06–3.50)

0.031

241

(0.6)

1.31 (1.14–1.50)

<0.001

1,412

(0.5)

5

(0.4)

1.31 (0.54–3.16)

0.547

158

(0.4)

1.28 (1.08–1.52)

0.004

942

(0.3)

12

(1.0)

0.82 (0.46–1.44)

0.483

350

(0.9)

0.74 (0.66–0.82)

<0.001

3,620

(1.2)

47

(3.9)

1.02 (0.77–1.37)

0.873

1,429

(3.7)

0.96 (0.91–1.02)

0.178

11,331

(3.8)

5

(0.4)

1.73 (0.72–4.17)

0.225

113

(0.3)

1.21 (0.99–1.47)

0.065

716

(0.2)

108

(9.0)

0.96 (0.79–1.17)

0.683

3,426

(8.9)

0.94 (0.91–0.98)

0.001

27,649

(9.4)

61

(5.1)

0.83 (0.64–1.08)

0.166

1,801

(4.7)

0.76 (0.72–0.80)

<0.001

17,874

(6.1)

20

(1.7)

0.80 (0.51–1.24)

0.31

839

(2.2)

1.04 (0.97–1.12)

0.317

6,178

(2.1)

136

(11.3)

3.46 (2.89–4.14)

<0.001

1,993

(5.2)

1.47 (1.40–1.54)

<0.001

10,537

(3.6)

7

(0.6)

1.47 (0.70–3.09)

0.313

173

(0.5)

1.12 (0.95–1.31)

0.171

1,182

(0.4)