Birthweights of Black African babies of migrant and non-migrant mothers compared with those of babies of Eupropean mothers in Portugal

S. Harding, P. Santana, J. K. Cruickshank, Massoud Boroujerdi

    Research output: Contribution to journalArticle

    19 Citations (Scopus)

    Abstract

    PURPOSE: The study aim is to investigate differences in birth weights between babies of foreign-born black African, Portugal-born black African, and Portugal-born white mothers.

    METHODS: Hospital records for Amadora and Sintra from July 2001 to June 2002 were collated and 2949 Portugal-born white, 461 Portugal-born black African, and 817 foreign-born black African live singleton babies were identified. The impact of biologic and social factors (infant sex, maternal age, parity, gestational age, and maternal smoking, education, and occupational class) and mode of delivery on birth weights was assessed by using multivariable regression models.

    RESULTS: African mothers were more likely to be of lower socioeconomic status than white Portuguese mothers, among whom rates of smoking were two to three times greater (21% among white Portuguese mothers). Small preterm babies comprised 1.5% of white Portuguese babies, 2.3% of babies of Portugal-born African mothers, and 3.9% of babies of foreign-born African mothers (p < 0.05 compared with white Portuguese babies). Compared with white Portuguese babies, mean birth weight of term babies, adjusted for sex, among Portugal-born African mothers was -24.6 g (95% confidence interval, -70.1-20.9), and among foreign-born African mothers, was +38.8 g (95% confidence interval, 2.9-74.8). Adjustment for parity, maternal age, and gestational age decreased the significant birth weight advantage of babies of foreign-born African mothers to + 2.3 g (95% confidence interval, -31.9-36.5). Among nonsmokers, after adjusting for these factors, white Portuguese babies were heavier (40 g; P < 0.05) than babies of foreign-born African mothers, but among smokers, they were lighter (163 g; p < 0.05).

    CONCLUSIONS: Compared with white Portuguese babies, mean birth weight of term babies of foreign-born African mothers was greater, and that of babies of Portugal-born African mothers was intermediate. These differences were related to a combination of biologic factors and smoking.

    Original languageEnglish
    Pages (from-to)572-579
    Number of pages7
    JournalAnnals of Epidemiology
    Volume16
    Issue number7
    DOIs
    Publication statusPublished - Jul 2006

    Keywords

    • birth weights
    • Africans in Portugal
    • generational status
    • biologic factors
    • smoking
    • PERINATAL-MORTALITY
    • UNITED-STATES
    • BORN BLACK
    • INFANTS
    • HEALTH
    • WOMEN

    Cite this

    Birthweights of Black African babies of migrant and non-migrant mothers compared with those of babies of Eupropean mothers in Portugal. / Harding, S.; Santana, P.; Cruickshank, J. K.; Boroujerdi, Massoud.

    In: Annals of Epidemiology, Vol. 16, No. 7, 07.2006, p. 572-579.

    Research output: Contribution to journalArticle

    Harding, S. ; Santana, P. ; Cruickshank, J. K. ; Boroujerdi, Massoud. / Birthweights of Black African babies of migrant and non-migrant mothers compared with those of babies of Eupropean mothers in Portugal. In: Annals of Epidemiology. 2006 ; Vol. 16, No. 7. pp. 572-579.
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    abstract = "PURPOSE: The study aim is to investigate differences in birth weights between babies of foreign-born black African, Portugal-born black African, and Portugal-born white mothers.METHODS: Hospital records for Amadora and Sintra from July 2001 to June 2002 were collated and 2949 Portugal-born white, 461 Portugal-born black African, and 817 foreign-born black African live singleton babies were identified. The impact of biologic and social factors (infant sex, maternal age, parity, gestational age, and maternal smoking, education, and occupational class) and mode of delivery on birth weights was assessed by using multivariable regression models.RESULTS: African mothers were more likely to be of lower socioeconomic status than white Portuguese mothers, among whom rates of smoking were two to three times greater (21{\%} among white Portuguese mothers). Small preterm babies comprised 1.5{\%} of white Portuguese babies, 2.3{\%} of babies of Portugal-born African mothers, and 3.9{\%} of babies of foreign-born African mothers (p < 0.05 compared with white Portuguese babies). Compared with white Portuguese babies, mean birth weight of term babies, adjusted for sex, among Portugal-born African mothers was -24.6 g (95{\%} confidence interval, -70.1-20.9), and among foreign-born African mothers, was +38.8 g (95{\%} confidence interval, 2.9-74.8). Adjustment for parity, maternal age, and gestational age decreased the significant birth weight advantage of babies of foreign-born African mothers to + 2.3 g (95{\%} confidence interval, -31.9-36.5). Among nonsmokers, after adjusting for these factors, white Portuguese babies were heavier (40 g; P < 0.05) than babies of foreign-born African mothers, but among smokers, they were lighter (163 g; p < 0.05).CONCLUSIONS: Compared with white Portuguese babies, mean birth weight of term babies of foreign-born African mothers was greater, and that of babies of Portugal-born African mothers was intermediate. These differences were related to a combination of biologic factors and smoking.",
    keywords = "birth weights, Africans in Portugal, generational status, biologic factors, smoking, PERINATAL-MORTALITY, UNITED-STATES, BORN BLACK, INFANTS, HEALTH, WOMEN",
    author = "S. Harding and P. Santana and Cruickshank, {J. K.} and Massoud Boroujerdi",
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    TY - JOUR

    T1 - Birthweights of Black African babies of migrant and non-migrant mothers compared with those of babies of Eupropean mothers in Portugal

    AU - Harding, S.

    AU - Santana, P.

    AU - Cruickshank, J. K.

    AU - Boroujerdi, Massoud

    PY - 2006/7

    Y1 - 2006/7

    N2 - PURPOSE: The study aim is to investigate differences in birth weights between babies of foreign-born black African, Portugal-born black African, and Portugal-born white mothers.METHODS: Hospital records for Amadora and Sintra from July 2001 to June 2002 were collated and 2949 Portugal-born white, 461 Portugal-born black African, and 817 foreign-born black African live singleton babies were identified. The impact of biologic and social factors (infant sex, maternal age, parity, gestational age, and maternal smoking, education, and occupational class) and mode of delivery on birth weights was assessed by using multivariable regression models.RESULTS: African mothers were more likely to be of lower socioeconomic status than white Portuguese mothers, among whom rates of smoking were two to three times greater (21% among white Portuguese mothers). Small preterm babies comprised 1.5% of white Portuguese babies, 2.3% of babies of Portugal-born African mothers, and 3.9% of babies of foreign-born African mothers (p < 0.05 compared with white Portuguese babies). Compared with white Portuguese babies, mean birth weight of term babies, adjusted for sex, among Portugal-born African mothers was -24.6 g (95% confidence interval, -70.1-20.9), and among foreign-born African mothers, was +38.8 g (95% confidence interval, 2.9-74.8). Adjustment for parity, maternal age, and gestational age decreased the significant birth weight advantage of babies of foreign-born African mothers to + 2.3 g (95% confidence interval, -31.9-36.5). Among nonsmokers, after adjusting for these factors, white Portuguese babies were heavier (40 g; P < 0.05) than babies of foreign-born African mothers, but among smokers, they were lighter (163 g; p < 0.05).CONCLUSIONS: Compared with white Portuguese babies, mean birth weight of term babies of foreign-born African mothers was greater, and that of babies of Portugal-born African mothers was intermediate. These differences were related to a combination of biologic factors and smoking.

    AB - PURPOSE: The study aim is to investigate differences in birth weights between babies of foreign-born black African, Portugal-born black African, and Portugal-born white mothers.METHODS: Hospital records for Amadora and Sintra from July 2001 to June 2002 were collated and 2949 Portugal-born white, 461 Portugal-born black African, and 817 foreign-born black African live singleton babies were identified. The impact of biologic and social factors (infant sex, maternal age, parity, gestational age, and maternal smoking, education, and occupational class) and mode of delivery on birth weights was assessed by using multivariable regression models.RESULTS: African mothers were more likely to be of lower socioeconomic status than white Portuguese mothers, among whom rates of smoking were two to three times greater (21% among white Portuguese mothers). Small preterm babies comprised 1.5% of white Portuguese babies, 2.3% of babies of Portugal-born African mothers, and 3.9% of babies of foreign-born African mothers (p < 0.05 compared with white Portuguese babies). Compared with white Portuguese babies, mean birth weight of term babies, adjusted for sex, among Portugal-born African mothers was -24.6 g (95% confidence interval, -70.1-20.9), and among foreign-born African mothers, was +38.8 g (95% confidence interval, 2.9-74.8). Adjustment for parity, maternal age, and gestational age decreased the significant birth weight advantage of babies of foreign-born African mothers to + 2.3 g (95% confidence interval, -31.9-36.5). Among nonsmokers, after adjusting for these factors, white Portuguese babies were heavier (40 g; P < 0.05) than babies of foreign-born African mothers, but among smokers, they were lighter (163 g; p < 0.05).CONCLUSIONS: Compared with white Portuguese babies, mean birth weight of term babies of foreign-born African mothers was greater, and that of babies of Portugal-born African mothers was intermediate. These differences were related to a combination of biologic factors and smoking.

    KW - birth weights

    KW - Africans in Portugal

    KW - generational status

    KW - biologic factors

    KW - smoking

    KW - PERINATAL-MORTALITY

    KW - UNITED-STATES

    KW - BORN BLACK

    KW - INFANTS

    KW - HEALTH

    KW - WOMEN

    U2 - 10.1016/j.annepidem.2005.10.005

    DO - 10.1016/j.annepidem.2005.10.005

    M3 - Article

    VL - 16

    SP - 572

    EP - 579

    JO - Annals of Epidemiology

    JF - Annals of Epidemiology

    SN - 1047-2797

    IS - 7

    ER -