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Table 1 Baseline characteristics by Newborn Dried Blood Spot Consent Status for Upstate KIDS, New York (2008–2010)

From: Eliciting parental support for the use of newborn blood spots for pediatric research

 

Among those returning infant 8-month materials (n = 3696)

 

No Consent (n = 589)

Consenta (n = 3107)

  

N (column %)

No.

%

No.

%

OR (95 % CI)

aOR (95 % CI)

Maternal age

      

 <25 years

83

14

415

13

1.00 (reference)

1.00 (reference)

 25 - < 30 years

170

29

779

25

0.92 (0.69–1.22)

0.78 (0.56–1.11)

 30 - < 35 years

179

30

1031

33

1.15 (0.87–1.53)

0.91 (0.63–1.30)

 35 years or older

157

27

882

28

1.12 (0.84–1.50)

0.88 (0.60–1.31)

 Singleton pregnancy

469

80

2420

78

0.90 (0.73–1.12)

0.90 (0.71–1.13)

Maternal race/ethnicity

      

 Non-hispanic White

460

78

2602

84

1.00 (reference)

1.00 (reference)

 Non-hispanic Black

23

4

101

3

0.78 (0.49–1.23)

0.68 (0.41–1.14)

 Non-hispanic Asian

11

2

91

3

1.46 (0.78–2.76)

1.64 (0.86–3.13)

 Hispanic

61

10

134

4

0.39 (0.28–0.53)

0.40 (0.28–0.58)

 Mixed / Other

34

6

179

6

0.93 (0.64–1.36)

0.94 (0.63–1.40)

Maternal education

      

 Less than high school

33

6

129

4

0.78 (0.52–1.18)

1.04 (0.61–1.78)

 HS or GED equivalent

59

10

330

11

1.12 (0.82–1.54)

1.21 (0.82–1.78)

 Some college

165

28

888

29

1.08 (0.86–1.35)

1.08 (0.84–1.41)

 College

132

22

763

25

1.16 (0.91–1.47)

1.19 (0.92–1.52)

 Advanced degree

200

34

997

32

1.00 (reference)

1.00 (reference)

 Private Insurance

463

79

2476

80

1.07 (0.86–1.33)

1.07 (0.81–1.42)

 Married/Living as married

512

92

2736

91

0.89 (0.64–1.23)

0.81 (0.56–1.16)

 Nulliparous

314

54

1420

46

0.73 (0.61–0.87)

0.71 (0.58–0.87)

 Any alcohol during pregnancy

55

9

422

14

1.52 (1.13–2.05)

1.53 (1.13–2.08)

 Smoked during pregnancy

51

9

345

11

1.32 (0.97–1.79)

1.15 (0.82–1.62)

Infertility treatment

      

 None

396

67

2096

67

1.00 (reference)

1.00 (reference)

 Drugs only

106

18

517

17

0.92 (0.73–1.17)

0.95 (0.73–1.23)

 ART

87

15

493

16

1.07 (0.83–1.38)

1.15 (0.86–1.55)

Prepregnancy BMI categories

      

 Normal weight (BMI <25)

341

55

1598

49

1.00 (reference)

1.00 (reference)

 Overweight (BMI 25–30)

132

24

757

26

1.22 (0.98–1.52)

1.25 (0.99–1.57)

 Obese (BMI ≥30)

114

21

745

25

1.39 (1.11–1.75)

1.43 (1.12–1.83)

  1. aIncludes: 16 who could not link to newborn screening: 1 singleton, 11 twins, 4 triplets (due to unclear which child of the set); Excludes 18 who had only provided blood spot consent
  2. Bolded for significance (p < 0.05)
  3. aORs adjusted for all other household/maternal factors in the Table
  4. Total N for the models were reduced due to missing information: 1 for specific type of infertility treatment, 2 for insurance status, 126 for marital status, 28 for parity, 2 for alcohol, 2 for smoking, and 9 for BMI
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BMC Medical Research Methodology

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