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Table 1 Baseline characteristics of study subjects according to pregnancy intention

From: Impact of unintended pregnancy on maternal mental health: a causal analysis using follow up data of the Panel Study on Korean Children (PSKC)

 

Total

Pregnancy intention

 
  

Unintended

Intended

 
 

N = 2076

N = 525 (25.3%)

N = 1551 (74.7%)

P value

Maternal age (years)

31.3 ± 3.7

30.0 ± 4.2

31.5 ± 3.5

0.0228

Paternal age (years)

33.9 ± 4.0

33.8 ± 4.6

33.9 ± 3.8

0.5571

Infant’s sex

    

Boy

1056 (50.9)

262 (49.9)

794 (51.2)

0.6099

Girl

1020 (49.1)

263 (50.1)

757 (48.8)

 

Infant’s birth order

    

First born

984 (47.5)

200 (38.1)

784 (50.7)

<0.0001

Later born

1087 (52.5)

325 (61.9)

762 (49.3)

 

Maternal education

    

University or over

829 (40.2)

193 (37.1)

635 (41.2)

0.0268§

Junior college

589 (28.6)

144 (27.7)

445 (28.9)

 

High school or under

643 (31.2)

183 (35.2)

460 (29.9)

 

Paternal education

    

University or over

1003 (50.4)

234 (46.4)

769 (51.7)

0.0356§

Junior college

420 (21.1)

111 (22.0)

309 (20.8)

 

High school or under

568 (28.5)

159 (31.6)

409 (27.5)

 

Maternal occupation

    

Non-manual

516 (25.2)

127 (24.4)

389 (25.5)

0.5975

Manual

113 (5.5)

33 (6.4)

80 (5.3)

 

Housewife/others

1415 (69.2)

360 (69.2)

1055 (69.2)

 

Paternal occupation

    

Non-manual

1261 (65.6)

299 (61.8)

962 (66.8)

0.0421

Manual

662 (34.4)

185 (38.2)

477 (33.2)

 

Household income quintiles

    

I (highest)

411 (19.9)

89 (17.1)

322 (20.9)

0.0002§

II

445 (21.6)

95 (18.2)

350 (22.7)

 

III

394 (19.1)

100 (19.2)

294 (19.1)

 

IV

377 (18.3)

104 (19.9)

273 (17.7)

 

V (lowest)

436 (21.1)

134 (25.7)

302 (19.6)

 

Maternal smoking

    

No

2059 (99.2)

519 (98.9)

1540 (99.3)

0.399*

Yes

17 (0.8)

6 (1.1)

11 (0.7)

 

Paternal smoking

    

No

1174 (56.6)

263 (50.1)

911 (58.7)

0.0006

Yes

902 (43.5)

262 (49.9)

640 (41.3)

 

Maternal alcohol consumption

    

No

1359 (73.0)

347 (72.4)

1012 (73.2)

0.7388

Yes

502 (27.0)

132 (27.6)

370 (26.8)

 

Paternal alcohol consumption

    

No

367 (21.4)

100 (22.5)

267 (21.0)

0.4931

Yes

1350 (78.6)

344 (77.5)

1006 (79.0)

 
  1. *Fisher’s exact test. §Mantel-Haenszel Chi-square test. Data are mean ± standard deviation or n (%).