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Table 4 Association of birthweight and gestational age with age at school entry

From: Birthweight, gestational age, and early school trajectory

Independent variable

 

Age at school entry

IRR

95% CI

Birthweight (ref. BW ≥ 2500)

  

 ≤ 1999

 

1.07

1.06–1.08

 2000–2499

 

1.03

1.00-1.06

Gestational age (ref. GA ≥ 37)

   

 ≤ 31

 

1.08

0.64–1.82

 32–36

 

1.03

0.87–1.21

  1. IRR: Incident rate ratio; CI: Confidence interval; BW: Birthweight; GA: Gestational age; all models were adjusted for sex, birth rank, mother’s education, mother’s age at childbirth, household socioeconomic status, and place of residence.
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BMC Public Health

ISSN: 1471-2458

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