Table 2 Comparison of Feeding Tolerance, Growth, and Infection incidence Between the 2 Groups
| Â | Intervention group | Control group | t | X2 | P |
|---|---|---|---|---|---|
Feeding tolerance | |||||
 Reflux (times/d) | 2.18 ± 0.83 | 3.77 ± 0.66 | −10.250 |  | 0.000 |
 TFF (d) | 9.95 ± 2.46 | 13.80 ± 3.47 | −2.874 |  | 0.015 |
Growth | |||||
 Weight gain (g/d) | 14.55 ± 3.07 | 10.12 ± 2.80 | 7.269 |  | 0.000 |
 HC increase (cm/d) | 0.0760 ± 0.0157 | 0.0681 ± 0.0108 | 2.794 |  | 0.007 |
 Body length increase (cm/d) | 0.1878 ± 0.0151 | 0.1756 ± 0.0166 | 3.687 |  | 0.000 |
Infection incidence | |||||
 Sepsis | 4.44% | 8.33% |  | 0.582 | 0.446 |
 Localized infection | 6.67% | 8.33% |  | 0.093 | 0.761 |
 NEC | 2.22% | 10.42% |  | 2.584 | 0.108 |
Other indicators | |||||
 Defecation (times/d) | 3.08 ± 0.33 | 2.29 ± 0.20 | 13.891 |  | 0.006 |
 Hospital stay (d) | 20.60 ± 5.36 | 23.75 ± 8.57 | −2.139 |  | 0.036 |