Table 3. Univariate linear regression analysis of the association between infants’ characteristics, co-morbidities and PMA at the start of oral feeding and at the achievement of full oral feeding.
| PMA at the start of oral feeding (weeks) |
PMA at the achievement of full oral feeding (weeks) |
|||||||
|---|---|---|---|---|---|---|---|---|
| R2 | β | 95% CI | p | R2 | β | 95% CI* | p | |
| Birth weight (100 g) | 0.32 | −0.2 | −0.3;−0.1 | <0.0001 | 0.43 | −0.6 | −0.7;−0.4 | <0.0001 |
| Gestational age (weeks) | 0.03 | −0.2 | −0.3;0.01 | 0.07 | 0.23 | −0.9 | −1.3;−0.5 | <0.0001 |
| Being SGA vs being AGA | 0.16 | 1.6 | 0.7;2.3 | <0.0001 | 0.18 | 4.06 | 2.1;5.9 | <0.0001 |
| BPD (yes vs no) | 0.18 | 1.5 | 0.8;2.2 | <0.0001 | 0.38 | 5.5 | 3.9;7.1 | <0.0001 |
| PDA (yes vs no) | 0.03 | 0.6 | −0.1;1.3 | 0.90 | 0.14 | 3.1 | 1.4;4.7 | <0.0001 |
| Sepsis (yes vs no) | 0.17 | 1.3 | 0.6;1.9 | <0.0001 | 0.20 | 3.5 | 1.9;5.1 | <0.0001 |
| GI Surgical procedures (yes vs no) | 0.04 | 1.2 | −0.1;2.4 | 0.06 | 0.10 | 4.4 | 1.5;7.3 | 0.03 |
| Neurosensory diseases (yes vs no) | 0.03 | 0.8 | −0.2;1.8 | 0.13 | 0.32 | 6.9 | 4.7;9.1 | <0.0001 |
PMA: postmenstrual age; CI: confidence interval; SGA: small for gestational age; AGA: appropriate for gestational age; BPD: bronchopulmonary dysplasia; PDA: patent ductus arteriosus; GI: gastrointestinal.