Table 1.
Characteristics of the factors may be related to gestational age at birth in IoWBC.
| Variable | Father and mother of F2-offspring in Isle of Wight third generation study (n = 92)a |
|---|---|
| Gestational age at birth, weeksb | 39.56 ± 1.34 |
| Paternal age at conception, yearsb | 25.28 ± 4.27 |
| Maternal age at conception, yearsb | 22.60 ± 2.61 |
| Race of fatherc | |
| White | 90 (98.9) |
| Other | 1 (1.1) |
| Education of fatherc | |
| Completed education at 16 y or earlier | 33 (36.7) |
| Completed education at 18 y | 18 (20.0) |
| Completed a college course | 30 (33.3) |
| Completed a university degree | 3 (3.3) |
| Other | 6 (6.7) |
| Maternal smoking level during pregnancyc | |
| 0 cigarette per day | 60 (65.2) |
| 1-10 cigarettes per day | 17 (18.5) |
| >10 cigarettes per day | 15 (16.3) |
| Paternal smokingc | |
| Yes | 37 (40.7) |
| Maternal chronic disease during pregnancyc | |
| Yes | 58 (64.4) |
| Form of deliveryc | |
| Normal, vertex | 66 (75.5) |
| Forceps assisted | 6 (6.6) |
| Vacuum extraction | 3 (3.3) |
| Cesarean section, planned | 5 (5.5) |
| Cesarean section, emergency | 11 (12.1) |
| Gravidac | |
| 1 | 52 (59.1) |
| 2 | 23 (26.1) |
| >3 | 13 (14.8) |
| Parityc | |
| 0 | 67 (73.6) |
| 1 | 16 (17.6) |
| >2 | 8 (8.8) |
| No. of prior unsuccessful pregnancyc | |
| 0 | 71 (79.8) |
| 1 | 14 (15.7) |
| 2 | 3 (3.4) |
| 3 | 1 (1.1) |
| Treatment for preterm labourc | |
| No | 75 (100.0) |
| White blood cellb | |
| CD4+ T cells | 13.8% ± 4.57% |
| CD8+ T cells | 6.5% ± 3.84% |
| Nature Kill cells | 3.7% ± 4.14% |
| B cells | 4.4% ± 2.85% |
| Monocytes | 8.0% ± 1.94% |
| Neutrophils | 63.5% ± 9.31% |
| Eosinophils | 0.0% ± 0.01% |
a
In the case of yes versus no question, only the proportion of positive answers is tabulated.
b
Values represent mean ± SD.
c
Values represent n (%).