Table 1.
Full sample baseline characteristics
| Characteristic | Overall (n = 660) |
Non-Nicotine exposed (n = 325) |
Nicotine- exposed (n = 335) |
p value |
|---|---|---|---|---|
| n (%) | n (%) | n (%) | ||
| Hypoglycemia | 0.135 | |||
| Absent | 423 (64%) | 218 (67%) | 205 (61%) | |
| Present | 237 (36%) | 107 (33%) | 130 (39%) | |
| Sex | 0.829 | |||
| Female | 345 (52%) | 168 (52%) | 177 (53%) | |
| Male | 315 (48%) | 157 (48%) | 158 (47%) | |
| Race/Ethnicity | <0.001 | |||
| African American | 217 (33%) | 71 (22%) | 146 (44%) | |
| Asian American | 15 (2.3%) | 11 (3.4%) | 4 (1.2%) | |
| Caucasian | 101 (15%) | 72 (22%) | 29 (8.7%) | |
| Hispanic | 121 (18%) | 75 (23%) | 46 (14%) | |
| Middle Eastern | 1 (0.2%) | 0 (0%) | 1 (0.3%) | |
| Missing | 205 (31%) | 96 (30%) | 109 (33%) | |
| Intrauterine Growth Restriction (IUGR) | 55 (8.3%) | 27 (8.3%) | 28 (8.4%) | >0.999 |
| Small for Gestational Age (SGA) | 74 (11%) | 36 (11%) | 38 (11%) | >0.999 |
| Maternal History of Diabetes | 91 (14%) | 40 (12%) | 51 (15%) | 0.330 |
| Mean (SD) | Mean (SD) | Mean (SD) | ||
| Gestational Age at Birth (Weeks) | 33.71 (4.46) | 33.67 (4.45) | 33.74 (4.48) | 0.770 |
| Gestational Age at Birth (Days) | 2.61 (2.03) | 2.62 (2.06) | 2.60 (2.00) | 0.962 |
| Weight (grams) | 2,253.94 (920.83) | 2,241.09 (913.72) | 2,266.41 (928.87) | 0.765 |
| Length (cm) | 44.62 (22.70) | 45.64 (31.60) | 43.63 (6.80) | 0.536 |
| Head circumference (cm) | 36.74 (76.17) | 39.86 (93.71) | 33.69 (53.80) | 0.627 |
*
Mean ± standard deviation (SD). p-Values calculated according to baseline characteristic variable type: chi-square test (categorical) or Mann-Whitney U (continuous).