Table 4:
Study Participants’ Demographic Characteristics Stratified by Gamma Tocopherol in Tertiles (N=652)
| Variable | Gamma Tocopherol 0- 5.9 μmol/L n=220 |
Gamma Tocopherol 5.9- 11.2 μmol/L n=215 |
Gamma Tocopherol 11.2- 51.3 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) | 39.0 [39.0,40.0] | 39.0 [39.0,40.0] | 39.0 [38.0,40.0] | <0.001 |
| Infant Age at Enrollment (days) | 54 [16,77] | 48 [17,86] | 44 [16,85] | 0.98 |
| Infant Race or Ethnicity | 0.46 | |||
| Black | 48 (22) | 46 (21) | 40 (18) | |
| White | 136 (62) | 129 (60) | 135 (62) | |
| Hispanic | 24 (11) | 17 (8) | 23 (11) | |
| Other | 12 (5) | 29 (11) | 19 (9) | |
| Birth Weight (grams) | 3462 [3202,3775] | 3405 [3107,3717] | 3433 [3150,3802] | 0.38 |
| Sex | 0.88 | |||
| Female | 105(48) | 99 (46) | 105 (48) | |
| Male | 115 (52) | 116 (54) | 112 (52) | |
| Parents | ||||
| Maternal Age (years) | 27.0 [23.0, 32.0] | 26.0 [23.0, 31.0] | 26.0 [22.0, 30.0] | 0.094 |
| Postpregnancy BMI* | 26.4 [23.6, 30.6] | 27.4 [24.5, 32.4] | 29.2 [25.4, 34.4] | <0.001 |
| Mother ever smoked | 64 (29) | 85 (40) | 91 (42) | 0.012 |
| Smoked during pregnancy | 26 (12) | 51 (24) | 38 (18) | 0.002 |
| Prenatal vitamin use during pregnancy | 207 (94) | 202 (94) | 200 (92) | 0.67 |
| Breastfeeding at enrollment | 129 (59) | 106 (49) | 96 (44) | 0.032 |
| Maternal history of asthma | 51 (23) | 48 (22) | 42 (19) | 0.6 |
| Maternal history of allergies | 68 (31) | 61 (28) | 42 (19) | 0.016 |
| Paternal history of asthma | 38 (17) | 23 (11) | 39 (18) | 0.14 |
| Paternal history of allergies | 64 (29) | 57 (27) | 45 (21) | 0.11 |
*
BMI, body mass index (kg/m2) was available in N=517 participants