Table 1.
Demographic data and TREC values in the study population.
| Sample size | n = 129,614a | TRECs, copies/μL, median (IQR) | p-valuec |
|---|---|---|---|
| All newborns | 104 (68-162) | – | |
| Sex | |||
| Male | 51.5% (66, 751) | 98 (64–152) | <0.05 |
| Female | 48.5% (62, 863) | 111 (73–173) | |
| Sample collection, hours, median (IQR) | 50 (49–60) | – | – |
| Gestational age, weeks, median (IQR) | 39 (38–40) | ||
| Extremely preterm, <32 weeks, % (n) | 0.6% (830) | 70 (43–127) | <0.05 |
| Preterm, 32-36 weeks, % (n) | 5.9% (7,561) | 96 (62–155) | |
| Term, ≥37 weeks, % (n) | 93.5% (121, 223) | 105 (68–162) | |
| Birth weight in term newbornsb, grams, median (IQR): | 3300 (3,010–3,590) | ||
| Low birth weight, % (n) | 3.4% (4,385) | 94 (61–145) | <0.05 |
| Normal weight,% (n) | 96.6% (114, 777) | 105 (69–163) |
a
Sample size after applying exclusion criteria;
b
Term newborns (n = 121, 223).
c
Mann-Whitney U or Kruskal-Wallis test were used for group comparisons (p-value calculated at a 5% significance level). IQR, interquartile range.