Table 3:
Study Participants’ Demographic Characteristics Stratified by Alpha Tocopherol in Tertiles (N=652)
| Variable | Alpha Tocopherol 4.18- 54.9 μmol/L n=218 |
Alpha Tocopherol 54.9- 92.0 μmol/L n=217 |
Alpha Tocopherol 92.0- 217.8 μmol/L n=217 |
|
|---|---|---|---|---|
| Infants | Median [IQR: 25th, 75th] or n (%) | Median [IQR: 25th, 75th] or n (%) | Median [IQR: 25th, 75th] or n (%) | p-value |
| Gestational Age (weeks) | 39 [39.0, 40.0] | 39.0 [39.0,40.0] | 39.0 [38.1,40.0] | 0.7 |
| Infant Age at Enrollment (days) | 63 [21, 97] | 59 [18, 82] | 24 [14, 65] | 0.001 |
| Infant Race or Ethnicity | 0.035 | |||
| Black | 55 (25) | 47 (22) | 32 (15) | |
| White | 123(56) | 134 (62) | 143 (66) | |
| Hispanic | 21 (10) | 25 (12) | 18 (8) | |
| Other | 19 (9) | 11 (5) | 24 (11) | |
| Birth Weight (grams) | 3405 [3126, 3717] | 3405 [3121, 3717] | 3518 [3206, 3859] | 0.028 |
| Sex | 0.59 | |||
| Female | 109 (50) | 98 (45) | 102 (47) | |
| Male | 109 (50) | 119 (55) | 115 (53) | |
| Parents | ||||
| Maternal Age (years) | 25.0 [22.0, 30.0] | 26.0 [23.0, 31.0] | 28.0 [24.0, 32.0] | <0.001 |
| Postpregnancy BMI* | 26.9 (24.0, 31.9) | 28.1 (24.4, 33.1) | 28.0 (24.2, 32.5) | 0.63 |
| Mother ever smoked | 82 (38) | 85 (39) | 82 (38) | 0.52 |
| Smoked during pregnancy | 46 (21) | 41 (19) | 28 (13) | 0.18 |
| Prenatal vitamin use during pregnancy | 202 (93) | 197 (91) | 210 (97) | 0.04 |
| Breastfeeding at enrollment | 101 (46) | 108 (50) | 122 (56) | 0.34 |
| Maternal history of asthma | 50 (23) | 49 (23) | 42 (19) | 0.61 |
| Maternal history of allergies | 59 (27) | 59 (27) | 53 (24) | 0.76 |
| Paternal history of asthma | 37 (17) | 30 (14) | 33 (15) | 0.86 |
| Paternal history of allergies | 58 (27) | 58 (27) | 50 (23) | 0.58 |
*
BMI, body mass index (kg/m2) was available in N=517 participants