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Table 1 Compare the women who were followed with those who were lost to follow-up or have missing data

From: Pregnancy complicated with hepatitis B virus infection and preterm birth: a retrospective cohort study

Characteristics

Women followed

Women lost to follow-up or had missing data

P value

Age (y)

29.55 ± 4.18

29.63 ± 4.34

0.079

Height (cm)

160.03 ± 5.17

160.12 ± 4.91

0.094

Prenatal weight (kg)

67.32 ± 8.32

67.20 ± 8.19

0.167

Previous PTB history(n(%))

252(1.8%)

450(1.8%)

0.655

HBV(n(%))

1320(9.4%)

2414(9.9%)

0.071