Table 1 The baseline characteristics of the two groups
Variable | Group1(n = 33) | Group2(n = 32) | t-Value | P-value |
|---|---|---|---|---|
Sex(F/M) | 12/21 | 12/20 | / | 0.924 |
Mean GA(W) | 31.06 ± 1.30 (28.57 ~ 33.86) | 30.43 ± 1.40 (27.14 ~ 32.86) | 1.890 | 0.063 |
Mean BW(g) | 1549.39 ± 317.77 (1020 ~ 2450) | 1411.72 ± 235.77 (1010 ~ 1920) | 1.979 | 0.052 |
Mean PMA at examination(W) | 37.38 ± 1.66 (35.00 ~ 40.43) | 37.41 ± 1.38 (35.14 ~ 40.71) | -0.079 | 0.938 |