Table 3.

Clinical characteristics predictive of CFU >34×10⁵ (median) in univariate and multivariate analysis.

Characteristics	Univariate	Multivariate
	Odds Ratio (95% CI*), p-value
Infant gestational age (weeks)
Overall Effect	p=0.0264	p=0.0027
34–37 vs. 38–40	1.23 (0.99–1.63), p=0.0567	1.32 (1.05–1.65), p=0.0182
34–37 vs. 41–42	1.44 (1.10–1.87), p=0.0071	1.63 (1.23–2.16), p=0.0006
38–40 vs. 41–42	1.17 (0.98–1.39), p=0.0859	1.24 (1.03–1.49), p=0.0213
Infant Race/Ethnicity+
Overall Effect	p=0.0020	p=0.0076
Caucasian compared to African American	1.37 (1.17–1.61), p=0.0001	1.39 (1.17–1.64), p=0.0001
Hispanic compared to African American	1.19 (0.97–1.47), p=0.0946	1.29 (1.03–1.60), p=0.0233
Infant birth weight (g)
>3500	1.43 (1.28–1.59), p<0.0001	1.25 (1.10–1.41), p=0.0003
≤3500	1.00	1.00
Infant gender
Male	1.18 (1.06–1.32), p=0.0023	NS
Female	1.00
Maternal age (years)
>20	1.24 (1.02–1.53), p=0.0381	NS
≤20	1.00
Collection volume (ml) and delivery type
≤80
Vaginal	NS	NS
Caesarean
>80
Vaginal	1.18 (1.03–1.34), p=0.0142	1.30 (1.13–1.49), p=0.0002
Caesarean	1.00	1.00
Processing time (hours)
Overall Effect	p<0.0001	p<0.0001
<10 hours vs. 10–23 hours	1.29 (1.15–1.46), p<0.0001	1.25 (1.11–1.42), p=0.0004
<10 hours vs. ≥24 hours	1.63 (1.36–1.95), p<0.0001	1.64 (1.36–1.98), p<0.0001
10–23 hours vs. ≥24 hours	1.26 (1.06–1.50), p=0.0098	1.31 (1.09–1.57), p=0.0035

CI: Confidence intervals; GA: gestational age; BW: birth weight;

^*Characteristics that were predictive of higher CFU content in either univariate or multivariate analysis were included. Viability of the cord blood cells was not associated with CFU content and was therefore not included in this table.

⁺All races/ethnicities were compared against each other in both univariate and multivariate analysis. Only the relationships that are statistically significant are shown in the table.