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. Author manuscript; available in PMC: 2014 Nov 1.
Published in final edited form as: Dev Psychobiol. 2012 Jul 6;55(7):707–718. doi: 10.1002/dev.21066

Table 1.

Demographic Characteristics of the Study Population: Maintained versus lost to follow up

Characteristics Mean (±SD) or %
Maintained
(n=103)
Mean (±SD) or %
Lost to Follow Up
(n=231)
Maternal Characteristics
Age (years) 27.45 (±5.65) 25.77 (±5.74)
Education (years) 14.38 (±3.10) 13.41 (±2.62)
Income (% < $26,000)1 34.00 54.39
Ethnicity (%)
      African American 10.68 15.48
      Asian 1.94 5.31
      Caucasian 25.24 12.39
      Latina 56.31 63.27
      Other 5.83 3.54
Parity (% Nulliparous) 62.00 52.25
Prenatal Cortisol (Acclimate) 1.14 (± 0.36) 1.27 (± 0.48)
Prenatal State Anxiety (STAI) 32.12 (± 9.04) 33.68 (± 10.39)
Prenatal Perceived Stress (PSS) 22.27 (± 7.25) 24.11 (± 7.69)
Prenatal Depression (CES-D) 12.48 (± 9.09) 16.59 (± 9.90)
Infant Characteristics
Infant age at test (weeks) 18.49 (±1.83) ---
Gestational age at birth (weeks) 39.30 (±1.61) 39.41 (±1.58)
Birth weight (grams) 3250.97 (±492.51) 3166.88 (±528.37)
Sex (% female) 61.00 47.87
1

Estimated poverty level for a family of four in New York City.