TABLE 5.

Comparison of Maternal Demographic and Infant Data According to Change in Cognitive Scores

Total Population (n = 200)Neurosensory-Intact Group (n = 154)
MDI < 70MDI < 85MDI < 70MDI < 85
MPC < 70 (n = 29)MPC ≥ 70 (n = 49)MPC < 85 (n = 67)MPC ≥ 85 (n = 67)MDI < 70 (n = 9)MDI ≥ 70 (n = 36)MDI < 85 (n = 38)MPC ≥ 85 (n = 56)
Maternal demographic data*
    Unmarried, n (%)12 (41)29 (59)34 (50)36 (54)5 (56)23 (64)23 (61)31 (56)
    Black race, n (%)20 (69)35 (71)47 (70)41 (61)8 (89)8 (78)31 (82)35 (63)
    Education, n (%)
        < High school3 (10)2 (14)8 (12)8 (12)2 (22)6 (17)6 (16)7 (13)
        High school14 (48)15 (31)28 (42)19 (28)4 (44)10 (28)16 (42)15 (27)
        > High school12 (41)27 (55)31 (46)40 (60)3 (33)20 (56)16 (42)34 (61)
    Mean percent below poverty level*18 ± 1721 ± 1822 ± 1916 ± 1517 ± 1024 ± 1925 ± 1917 ± 16
    Mean family income§39 ± 1936 ± 2135 ± 1842 ± 2134 ± 835 ± 2330 ± 1442 ± 21
Infant data
    Birth weight, g ± SD801 ± 128785 ± 132789 ± 135812 ± 131796 ± 118804 ± 135790 ± 133821 ± 133
    Gestational age, wk ± SD26.4 ± 225.9 ± 226.2 ± 226.2 ± 226.2 ± 226.3 ± 226.2 ± 226.5 ± 2
    Gender, male, n (%)16 (55)24 (49)33 (49)31 (46)3 (33)20 (56)17 (45)26 (46)
    Chronic lung disease, n (%)16 (57)16 (57)39 (59)27 (40)4 (44)19 (53)21 (55)20 (36)#
    Severely abnormal cerebral ultrasound, n (%)**13 (45)9 (18)24 (36)12 (18)3 (33)3 (8)9 (24)5 (9)
    Cerebral palsy, n (%)13 (45)8 (16)21 (31)5 (8)
    Neurosensory abnormality, n (%)††20 (69)13 (27)‡‡29 (43)11 (16)
  • * At 8 years old, pertains to biological or adoptive mother in 89% and to other primary caregiver in 11%.

  • P < .05.

  • Mean of percent of families below the poverty level according to the 2000 Census tract areas in which the families lived.

  • § Mean of median family income in thousands of dollars according to the 2000 Census tract.

  • Oxygen dependent at 36 weeks’ CA.17

  • P < .01.

  • # P = .06.

  • ** Includes grade III and IV bleed, periventricular leukomalacia, or ventricular dilatation at discharge.

  • †† Includes cerebral palsy and or unilateral blindness or deafness at 20 months’ CA.

  • ‡‡ P < .001.