Males (N = 10) Males (N = 10) Females (N = 8) Females (N = 8)
Mean SD Range Mean SD Range t p
Infant characteristics
Gestation age (weeks)
39.69
.90
38.14 - 41.14
40.30
1.01
39 - 42
-1.366
.191
Birth weight (grams)
3665.5
323.08
3105 – 4050
3579.5
391.66
3085 - 4395
.565
.580
Apgar minute 1
8.20
2.098
3 – 9
8.88
.354
3 – 9
-.895
.384
Apgar minute 5
9.10
.568
8 – 10
9.13
.641
8 - 10
-.088
.931
Age at scan from birth (days)
23.40
1.01
11 - 36
26.75
6.36
19 - 40
-.960
.351
Sociodemographic variables
Maternal age (years)
29.60
5.06
34.0 – 37.5
29.63
4.57
24 - 36
-.011
.991
Maternal BMI
27.19
5.03
21.26 – 34.42
26.29
3.55
21.05-33.06
.424
.678
Frequencies
Ethnicity (Caucasian/Non-Caucasian)
10/0
10/0
10/0
8/0
8/0
8/0
Maternal Education
(1 = High school graduate or lower;
2 = College degree;
3 = University degree)
2/2/6
2/2/6
2/2/6
4/3/1
4/3/1
4/3/1
Family SES
(1 = < 500;
2 = 501-1000;
3 = 1001-1500;
4 = 1501-2000;
5 = 2001-2500;
6 = 2501-3000;
7 = 3001-3500;
8 = 3501- 4000;
9 = > 4000)
1/0/1/5/3/0/0/0/0
1/0/1/5/3/0/0/0/0
1/0/1/5/3/0/0/0/0
1/1/0/5/0/0/0/1/0
1/1/0/5/0/0/0/1/0
1/1/0/5/0/0/0/1/0
1/1/0/5/0/0/0/1/0
Maternal smoking during pregnancy (yes/no)
0/10
0/10
0/10
1/7
1/7
1/7
1/7
Maternal use of illicit substances during pregnancy (yes/no)
0/10
0/10
0/10
0/8
0/8
0/8
0/8
Maternal emotional state
EPDS score
3.10
2.33
0 - 7
3.62
4.34
0 - 11
-.329
.746
SCL score
3.80
3.01
0 - 10
1.87
2.64
0 -8
1.421
.174