Table 1 Characteristics of the ART and SC individuals included in this study
 | ART | SC | P-value |
---|---|---|---|
(N = 270) | (N = 181) | ||
 | % (N) |  | |
Source material | |||
Blood1 | 38.1% (103) | 35.9% (65) | Â |
   Newborns | 17.0% (46) | 0.0% (0) |  |
   Young adults | 21.1% (57) | 35.9% (65) |  |
Placenta2 | 24.4% (66) | 28.2% (51) | Â |
Buccal cells3 & Saliva2 | 37.4% (101) | 35.9% (65) | Â |
   Children | 37.4% (101) | 2.8% (5) |  |
   Young adults | 0.0% (0) | 33.1% (60) |  |
Mother-child pairs | 67 | 90 | Â |
Clinical parameters | |||
Mean maternal age4 ± SD* | 32.5 ± 3.7 (211) | 30.1 ± 4.4 (173) | <0.0001a |
Maternal BMI > 25* | 40.2% (86/214) | 25.6% (42/164) | 0.0031b |
Birthweight* | (224) | (164) | Â |
   Mean (grams) ± SD | 3377.9 ± 536.0 | 3394.3 ± 500.7 | 0.7596a |
   <10th percentile | 7.0% (19) | 5.0% (9) | 0.2407b |
   <25th percentile | 15.2% (41) | 14.4% (26) | 0.4992b |
Preterm birth (<37 weeks)* | 5.8% (13/224) | 6.1% (10/164) | 1.0000b |
Sex* | (224) | (181) | Â |
 (Male–Female) | 41.5% (112) –41.5% (112) | 44.8% (81) –55.2% (100) | 0.3176b |
Culture medium | 224 | NA | Â |
   Vitrolife® G3 | 19.3% (52) | NA |  |
   Vitrolife® G5 | 24.4% (66) | NA |  |
   Cook® | 18.1% (49) | NA |  |
   UZB | 21.1% (57) | NA |  |
   Unknown | 17.0% (46) | NA |  |
Pregnancy hypertension* | 4.1% (8/193) | 1.9% (3/159) | 0.3571b |
Gestational diabetes* | 1.0% (2/193) | 1.3% (2/158) | 1.0000b |
Primiparity* | 75.2% (167/222) | 47.2% (68/144) | <0.0001b |
Smoking during pregnancy* | 5.5% (12/220) | 7.7% (13/169) | 0.4086b |