Table 1 The characteristics of included newborns

Gender (male/female)

24/17

211/134

1.215

0.107

Gestational age (weeks)

32.10 ± 4.58

33.04 ± 2.16

3.108

0.075

Birth weight (g)

1468.82 ± 212.14

1596.24 ± 243.92

42.137

0.012

Cesarean section

32 (78.05%)

260 (75.36%)

1.196

0.088

Durations of PICC stay (days)

24.18 ± 3.01

17.29 ± 3.25

3.122

0.031

5-min Apgar score

6.14 ± 2.06

7.83 ± 2.19

1.287

0.024

Mechanical ventilation

35 (85.37%)

288 (83.48%)

1.441

0.092

Site of PICC insertion

 Basilic vein

24 (58.54%)

257 (74.49%)

1.326

0.014

 Cephalic vein

5 (12.19%)

32 (9.27%)

 Median elbow vein

4 (9.76%)

24 (6.96%)

 Axillary vein

3 (7.32%)

17 (4.93%)

 Femoral vein

5 (12.19%)

15 (4.35%)

 Length of hospital stay (days)

36.14 ± 7.21

35.58 ± 6.28

3.206

0.065