Table 2 Odds of postpartum hospitalization for patients with a mental health condition or substance use disorder diagnoses by severe maternal morbidity status

Unadjusted

Adjusted

Unadjusted

Adjusted

Unadjusted

Adjusted

OR

95% CI

OR

95% CI

OR

95% CI

OR

95% CI

OR

95% CI

OR

95% CI

SMM during delivery (no SMM = Ref.)

5.67**

4.21, 7.64

3.73**

2.69, 5.16

4.44**

2.77, 7.1

2.67**

1.62, 4.4

4.93**

3.08, 7.9

2.95**

1.81, 4.8

Age (years)

< 25

Ref.

Ref.

Ref.

Ref.

Ref.

Ref.

 25–29

0.61**

0.53, 0.72

0.71**

0.61, 0.83

0.87

0.7, 1.07

1.05

0.84, 1.3

0.79*

0.63, 0.98

0.97

0.77, 1.22

 30–34

0.49**

0.42, 0.58

0.72**

0.61, 0.85

0.48**

0.38, 0.61

0.86

0.67, 1.11

0.41**

0.31, 0.52

0.74*

0.57, 0.97

 35–39

0.48**

0.4, 0.58

0.73**

0.6, 0.89

0.43**

0.32, 0.59

0.90

0.66, 1.24

0.43**

0.32, 0.58

0.91

0.66, 1.25

 40+

0.38**

0.26, 0.56

0.61*

0.41, 0.9

0.48**

0.28, 0.81

1.18

0.68, 2.04

0.39**

0.22, 0.71

0.98

0.53, 1.8

Race & Ethnicity

 NH White

Ref.

Ref.

Ref.

Ref.

Ref.

Ref.

 NH Black

1.18**

1.04, 1.34

1.01

0.88, 1.16

0.98

0.82, 1.17

0.69**

0.56, 0.83

1.06

0.88, 1.28

0.76**

0.62, 0.94

 Hispanic

0.42**

0.33, 0.53

0.45**

0.35, 0.59

0.14**

0.08, 0.24

0.15**

0.09, 0.25

0.15**

0.09, 0.26

0.17**

0.09, 0.3

 Other/multiple races

0.51**

0.4, 0.65

0.75*

0.58, 0.96

0.33**

0.22, 0.5

0.52**

0.34, 0.79

0.37**

0.24, 0.55

0.61*

0.4, 0.95

Median income¹

 1st quartile

Ref.

Ref.

Ref.

Ref.

Ref.

Ref.

 2nd quartile

0.61**

0.53, 0.7

0.87

0.75, 1.01

0.46**

0.37, 0.57

0.76*

0.61, 0.95

0.47**

0.38, 0.58

0.79*

0.63, 1

 3rd quartile

0.45**

0.38, 0.53

0.76**

0.64, 0.9

0.37**

0.29, 0.47

0.82

0.64, 1.05

0.33**

0.26, 0.43

0.76*

0.58, 0.99

 4th quartile

0.41**

0.34, 0.49

0.73**

0.6, 0.9

0.24**

0.17, 0.33

0.61**

0.44, 0.86

0.21**

0.15, 0.29

0.56**

0.39, 0.81

Primary insurance

 Private

Ref.

Ref.

Ref.

Ref.

Ref.

Ref.

 Medicaid

2.82**

2.48, 3.21

2.16**

1.85, 2.53

7.94**

6.2, 10.17

5.25**

3.91, 7.06

8.88**

6.77, 11.65

5.76**

4.2, 7.89

 Self-pay/none

1.59**

1.16, 2.18

1.61**

1.17, 2.2

2.47**

1.42, 4.3

2.36**

1.35, 4.12

2.40**

1.29, 4.47

2.35**

1.26, 4.37

Urban residence

1.04

0.7, 1.53

1.25

0.84, 1.85

1.04

0.58, 1.88

1.64

0.9, 2.99

1.02

0.55, 1.89

1.50

0.81, 2.8

Comorbidities during delivery

 MH condition

8.78**

7.81, 9.86

6.58**

5.76, 7.53

7.14**

6.01, 8.48

3.07**

2.5, 3.77

11.23**

9.39, 13.43

5.42**

0.59, 6.71

 SUD

6.14**

5.29, 7.13

2.07**

1.74, 2.45

23.54**

19.89, 27.87

7.39**

5.99, 9.13

20.29**

16.95, 24.29

5.30**

4.27, 6.59

Stillbirth

3.49**

2.41, 5.06

2.24**

1.48, 3.4

3.32**

1.83, 5.99

1.86*

1, 3.46

2.52**

1.3, 4.87

1.42

0.7, 2.88