Table 2 Association between preterm birth and maternal mental illness hospitalization

Any mental illness

6362

66,789

3.81 (3.72-3.90)

3.01 (2.99-3.04)

1.45 (1.42-1.48)

1.38 (1.35-1.41)

Depression

2573

26,651

1.50 (1.45-1.56)

1.18 (1.16-1.19)

1.45 (1.40-1.50)

1.37 (1.32-1.41)

Bipolar disorder

974

11,409

0.56 (0.53-0.60)

0.50 (0.49-0.51)

1.24 (1.17-1.30)

1.22 (1.15-1.29)

Psychotic disorder

639

6524

0.37 (0.34-0.40)

0.29 (0.28-0.29)

1.39 (1.29-1.48)

1.35 (1.25-1.44)

Stress and anxiety disorder

3977

41,456

2.34 (2.27-2.42)

1.85 (1.83-1.86)

1.49 (1.46-1.53)

1.42 (1.38-1.46)

Personality disorder

1772

17,623

1.03 (0.99-1.08)

0.78 (0.77-0.79)

1.59 (1.53-1.66)

1.50 (1.44-1.56)

Intentional self-harm

932

9930

0.54 (0.51-0.58)

0.44 (0.43-0.44)

1.47 (1.39-1.55)

1.36 (1.28-1.43)