|
Characteristics of the neonatal study subjects (n = 176) |
|
| Maturity in weeks (mean ± S.D) |
38.93 ± 3.45 |
|
|
|
| Hours of birth (mean ± S.D) |
45.78 ± 15.15 |
|
|
|
| Sex |
|
| Male (n, %) |
99 (56.3) |
| Female (n, %) |
77 (43.7) |
|
|
|
| Birth weight (g, mean ± S.D) |
2644.35 ± 413.15 |
|
|
|
| Head circumference (cm, mean ± S.D) |
32.47 ± 2.13 |
|
|
|
| Umbilical cord blood lead level (μg/dL, mean ± S.D) |
5.15 ± 12.65 |
|
|
|
| Fetal obstetrical problem (n, %) |
|
| Yes |
6 (3.4) |
| No |
157 (89.2) |
| Unknown |
13 (7.4) |
|
|
|
| Specific disorder in fetus/neonate (n, %) |
|
| Yes |
17 (9.6) |
| No |
145 (82.4) |
| Unknown |
14 (8.0) |
|
|
|
| Maternal obstetrical problem (n, %) |
|
| Yes |
44 (25.0) |
| No |
119 (67.6) |
| Unknown |
13 (7.6) |
|
|
|
| Problem noted during labor (n, %) |
|
| Yes |
59 (33.5) |
| No |
109 (61.9) |
| Unknown |
8 (4.6) |
|
|
|
| Use of oxytoxic agents during labor (n, %) |
|
| Yes |
44 (25.0) |
| No |
127 (72.2) |
| Unknown |
5 (2.8) |
|
|
|
| Rupture of membranes before labor onset (n, %) |
|
| No |
135 (76.7) |
| Less than 24 hours |
29 (16.5) |
| 24 to less than 72 hours |
5 (2.8) |
| 72 to less than 120 hours |
1 (0.6) |
| More than 120 hours |
1 (0.6) |
| Unknown |
5 (2.8) |
|
|
|
| Maternal medical problem during this pregnancy (n, %) |
|
| Yes |
30 (17.1) |
| No |
137 (77.8) |
| Unknown |
9 (5.1) |
|
|
|
| Tobacco intake by mother (n, %) |
|
| No |
164 (93.2) |
| Yes |
8 (4.6) |
| Unknown |
4 (2.2) |
|
|
|
| Alcohol intake by mother (n, %) |
|
| Yes |
3 (1.8) |
| No |
169 (96.0) |
| Unknown |
4 (2.2) |
|
|
|
| House painted (n, %) |
|
| No or white wash |
98 (55.7) |
| Yes, some |
35 (19.9) |
| Yes, complete |
39 (22.2) |
| Unknown |
4 (2.2) |
|
|
|
| Age of house paint (n, %) |
|
| < 5 years |
62 (83.8) |
| 5 – 10 years |
7 (9.5) |
| Unknown |
5 (6.7) |
|
|
|
| NBAS cluster scores (mean ± S.D) |
|
| Habituation |
28.91 ± 3.29 |
| Orientation |
43.06 ± 8.19 |
| Motor |
26.60 ± 3.69 |
| Range of state |
16.05 ± 3.83 |
| Regulation of state |
18.69 ± 5.38 |
| Autonomic stability |
14.12 ± 3.29 |
| Abnormal reflexes |
2.37 ± 1.98 |
Patel et al. Behavioral and Brain Functions 2006 2:22 doi:10.1186/1744-9081-2-22 |
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