| Summary: | 碩士 === 高雄醫學大學 === 公共衛生學研究所 === 91 === Background：
‘Preterm babies’ (gestational weeks less than 37 weeks) and ‘low birth weight babies’ (birth weight less or equal than 2500g) are worse pregnant outcomes. Since both incidence of preterm and low birth weight are significant predictors of infant mortality.
Purpose:
There are three objectives in our study. First，to evaluate the incidences of preterm and low birth weight babies in Taiwan from 1978 to 1997. Second，to evaluate the incidence of preterm and low birth weight babies in each countries in 1997.Third, to evaluate each possible confounders the odds ratio of preterm and low birth weight babies in Taiwan from 1991 to 1997.
Materials & methods:
We used the birth registration data from 1978 to 1997. We evaluate the incidence. We also used multiple logistic regression to control confounders (including year, maternal age, baby sex, maternal education, marital status, place…etc), and we evaluate the odds radio of several possible factor for preterm and low birth weight babies.
Results:
The incidences of preterm and low birth weight babies are steady increase yearly from 1978 to 1997. The incidences of preterm babies is 2.56% in 1978；The incidences of preterm babies is 6.29% in 1997. The incidences of low birth weight infants is 5.60% in 1978；The incidences of low birth weight infants is 10.99% in 1997. The incidences of preterm and low birth weight babies is in Nantou，Taitung and Haulien are significant highly then other country；The logistic regressions show that: the incidences of preterm and low birth weight babies are related to maternal age, baby sex, maternal education, marital status, place.
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