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Table 1 Characteristics of the included clinical trials in the study

From: The effects of telbivudine in late pregnancy to prevent intrauterine transmission of the hepatitis B virus: a systematic review and meta-analysis

Study

Study design

Telbivudine/Control (n)

HBeAg (+) (-) (n)

Baseline ALT (U/L)

HBV DNA level(log copies/ml)

Treatment

Newborn immunization

  

Telbivudine

Control

Telbivudine

Control

Telbivudine

Control

Lower enrollment limit

Telbivudine (mg/d)

Control

HBIG (IU)

HVB ac (mg)

Zhang 2009 [19]

RCT

31/30

NA

NA

NA

NA

Mean (SD): 7.38 (0.81)

Mean (SD):

7,460 (0.45

7

600 from 28-32 wk of gestation to 1 mo after delivery

No treatment

200 at birth and 30 d

10 at 0, 1, 6 mo

Zhao 2010 [22]

RCT

30/30

30/0

30/0

Normal (NA)

Normal (NA)

Positive (NA)

Positive (NA)

Positive (NA)

600 from 28 wk of gestation to 1 mo after delivery

No treatment

200 at birth and 30 d

10 at 0, 1, 6 mo

Zeng 2010 [20]

NRCT

22/26

22/0

26/0

Normal NA)

Normal (NA)

Mean (SD): 7.66 (0.82)

Mean (SD): 7.13 (1.29)

5

600 from 28 wk of gestation to delivery

No treatment

200 at birth

10 at 0, 1, 6 mo

Zhang 2010 [21]

NRCY

60/60

60/0

60/0

NA

NA

Mean (SD): 7.66 (0.82)

Mean (SD): 6.86 (6,10)

6

600 from 28 wk of gestation to 1 mo after delivery

No treatment

200 at birth and 30 d

10 at 0, 1, 6 mo

Yao 2011 [23]

NRCT

28/30

NA

NA

Mean (SD): 93.6 (226.8)

Mean (SD): 50.5 (5.5)

Mean (SD): 7.50 (0.60)

Mean (SD): 7.50 (0.70)

6

600 fro 28 wk of getation to wk after delivery

No treatment

200 at birth

10 at 0, 1, 6H

Han 2011 [5]

NRCT

135/94

135/0

94/0

Mean (SD): 35.67 (43.41

Mean (SD): 42.53 (40.13)

Mean (SD): 8.10 (0.56)

Mean (SD): 7.98 (0.61)

7

600 from 20-32 wk of gestation to 1 mo after delivery

No treatment

200 at birth and 15 d

20 at 0, 1, 6,

  1. RCT: randomized controlled trial; NRCT: non randomized controlled trial: NA: not available; Mean (SD): mean (standard deviation): HBGIG: hepatitis B immunoglobulin; IU: International Unit; HBVac: hepatitis B vaccine.