Table 1 Baseline characteristics and assessment (T0)

Gestational age (weeks)

30.13 ± 1.56

30.35 ± 1.92

30.06 ± 1.39

0.273

0.762

Birth weight (gram)

1412.45 ± 178.34

1499.67 ± 200.23

1511.18 ± 187.06

2.744

0.069

Corrected gestational age (weeks)

36.87 ± 1.21

36.58 ± 0.92

36.97 ± 1.19

1.040

0.357

Weight at discharge (gram)

2499.73 ± 345.37

2492.11 ± 383.41

2504.94 ± 340.54

0.010

0.990

Female/male

24/10

18/13

19/14

1.544

0.462

Duration of maternal education (years)

14.45 ± 2.03

14.72 ± 2.56

14.82 ± 3.20

0.177

0.838

TIMP score

53.12 ± 8.79

50.52 ± 8.64

N/A

1.443

0.234

DQ overall general score

82.94 ± 5.85

79.32 ± 10.31

N/A

3.095

0.083

 Gross motor

82.76 ± 14.90

78.84 ± 15.42

N/A

1.088

0.301

 Fine motor

85.62 ± 20.47

78.71 ± 22.40

N/A

1.688

0.199

 Adaptive behavior

83.21 ± 20.35

81.26 ± 31.20

N/A

0.090

0.765

 Personal-Social behavior

80.29 ± 20.74

79.42 ± 17.40

N/A

0.034

0.855

 Language behavior

83.24 ± 14.11

78.23 ± 14.25

N/A

2.024

0.160

 Length (cm)

47.26 ± 2.15

46.67 ± 1.90

47.04 ± 1.95

0.711

0.494

 Weight (kg)

2.86 ± 0.84

2.73 ± 0.75

2.80 ± 0.65

0.243

0.785

 Head circumference (cm)

32.06 ± 1.33

31.37 ± 1.65

32.21 ± 1.70

2.727

0.071