Table 1 Means and Standard Ds of Variables included in SEM Model.

From: Social disadvantage during pregnancy: effects on gestational age and birthweight

Variable

n

Mean (SD) or N (%)

Min

Max

Disadvantage Indices

Log10 (Income/Needs—I/N)a

Ā Ā Ā Ā 

Ā Ā 1st Trimester

385

0.24 (0.40)

āˆ’0.495 (0.32)d

1.096 (12.5)d

Ā Ā 2nd Trimester

305

0.28 (0.41)

āˆ’0.523 (0.30)

1.096 (12.5)

Ā Ā 3rd Trimester

330

0.26 (0.41)

āˆ’0.456 (0.35)

1.096 (12.5)

ADI—Area Deprivation Index—(National Percentile)

376

69.09 (24.84)

1

100

HEI (Healthy Eating Index)–2016 Total Score

308

58.45 (9.90)

31.7

80.7

Health Insurancec

399

Ā 

–

–

Ā Ā Individual/Group

Ā 

200 (50%)

Ā Ā 

Ā Ā Medicaid

Ā 

145 (36%)

Ā Ā 

Ā Ā Medicare

Ā 

7 (2%)

Ā Ā 

Ā Ā Uninsured

Ā 

45 (11%)

Ā Ā 

Ā Ā VA/Military

Ā 

2 (1%)

Ā Ā 

Education

355

Ā Ā Ā 

Ā Ā Less than high school

Ā 

28 (7%)

Ā Ā 

Ā Ā High school grad

Ā 

196 (55%)

Ā Ā 

Ā Ā College grad

Ā 

56 (16%)

Ā Ā 

Ā Ā Post-grad degree

Ā 

77 (22%)

Ā Ā 

Psychosocial Stress Indices

Edinburgh Postpartum Depression Scale (EPDS)

Ā Ā Ā Ā 

Ā Ā 1st Trimester

396

5.25 (4.88)

0

25

Ā Ā 2nd Trimester

331

5.00 (4.94)

0

26

Ā Ā 3rd Trimester

330

4.38 (4.70)

0

25

Perceived Stress Survey (PSS)

Ā Ā Ā Ā 

Ā Ā 1st Trimester

394

13.69 (7.39)

0

38

Ā Ā 2nd Trimester

304

13.81 (7.68)

0

38

Ā Ā 3rd Trimester

325

13.25 (7.36)

0

37

Discrimination Surveyb

366

1.490 (0.88)

1

6

STRAIN (stressful life events)

Ā Ā Ā Ā 

Ā Ā STRAIN-CT (count)

363

7.62 (6.06)

0

30

Ā Ā STRAIN-WTSEV (weighted severity)

363

22.67 (19.87)

0

99

Maternal Medical Factors

Maternal Medical Risk Score

399

1.28 (1.69)

0

12

Pre-Pregnancy BMI

307

29.05 (8.34)

16.1

64.6

Maternal age at delivery

399

29.23 (5.32)

18.65

41.90

Cervical Length

358

40.40 (7.61)

4.5

69.2

Birthweight Relevant Variables

Birthweight

399

3129 (609)

860

4665

Log10(Birthweight)

399

3.49 (0.10)

2.93

3.67

Child Sex

399

Ā 

–

–

Ā Ā Male

Ā 

221 (55%)

Ā Ā 

Ā Ā Female

Ā 

178 (45%)

Ā Ā 

Gestational Age

399

38.31 (1.99)

26.4

41.6

Log10(Birthweight) residual

399

0.00 (0.06)

āˆ’0.22

0.20

  1. aLog transformed because of skewed distribution of variable and to make the ratio symmetric around 1.0.
  2. bScore only if perceived as racial in nature, 0 otherwise.
  3. cAnalyzed as Individual/Group vs. all others.
  4. dUntransformed values.