Skip to main content
Erschienen in: Environmental Health and Preventive Medicine 4/2008

01.07.2008 | Regular Article

Breast-feeding rates and related maternal and infants’ obstetric factors in Japanese twins

verfasst von: Syuichi Ooki

Erschienen in: Environmental Health and Preventive Medicine | Ausgabe 4/2008

Einloggen, um Zugang zu erhalten

Abstract

Objectives

The aims of the present study are to describe the secular trend of breast-feeding rates in Japanese twins in comparison with the general population, and then to clarify the maternal and infants’ obstetric factors associated with breast-feeding in twins.

Methods

Breast-feeding rates from 0 to 6 full months and related maternal and infant obstetric factors were analyzed using 4,023 Japanese twins, consisting of two different volunteer-based twin samples, age 1–15 years, whose birth year ranged from 1968 to 2003. Data were collected through mailed or hand-delivered questionnaires. Obstetric factors that affect full and partial breast-feeding of twins were confirmed using logistic analyses according to birth order in twin pairs, adjusted by birth year.

Results

The full breast-feeding rates of twins were lower than those of the general population. On the other hand, the combined rates of full and partial breast-feeding were close to those of general population, except for the period 1968–1974. The percentage of concordance pares was around 95% for all months. The most influential factor that negatively correlated with breast-feeding from 0 to 6 months was gestational weeks. Higher maternal age at twin birth and the use of an incubator also prevented breast-feeding in the neonatal period.

Conclusions

The results of the present study for the first time indicated that full breast-feeding of twins has risen recently in Japan, although the rates are still lower than those of the general population. The importance of the gestational weeks for breast-feeding rates was also shown.
Literatur
1.
Zurück zum Zitat Flidel-Rimon O, Shinwell ES. Breast feeding twins and high multiples. Arch Dis Child Fetal Neonatal Ed. 2006;91:F377–80.PubMedCrossRef Flidel-Rimon O, Shinwell ES. Breast feeding twins and high multiples. Arch Dis Child Fetal Neonatal Ed. 2006;91:F377–80.PubMedCrossRef
2.
Zurück zum Zitat McKenzie PJ. The seeking of baby-feeding information by Canadian women pregnant with twins. Midwifery. 2006;22:218–27.PubMedCrossRef McKenzie PJ. The seeking of baby-feeding information by Canadian women pregnant with twins. Midwifery. 2006;22:218–27.PubMedCrossRef
3.
Zurück zum Zitat Nihon syouni hoken kyoukai. Growth standards of Japanese young children. Research by Ministry of Health and Welfare of Japan in 1970. Tokyo: Nihon syouni hoken kyoukai; 1972 (in Japanese). Nihon syouni hoken kyoukai. Growth standards of Japanese young children. Research by Ministry of Health and Welfare of Japan in 1970. Tokyo: Nihon syouni hoken kyoukai; 1972 (in Japanese).
4.
Zurück zum Zitat Nihon syouni hoken kyoukai. Growth standards of Japanese young children. Research by Ministry of Health and Welfare of Japan in 1980. Tokyo: Nihon syouni hoken kyoukai; 1982 (in Japanese). Nihon syouni hoken kyoukai. Growth standards of Japanese young children. Research by Ministry of Health and Welfare of Japan in 1980. Tokyo: Nihon syouni hoken kyoukai; 1982 (in Japanese).
5.
Zurück zum Zitat Nihon syouni hoken kyoukai. Growth standards of Japanese young children. Research by Ministry of Health and Welfare of Japan in 1990. Tokyo: Nihon syouni hoken kyoukai; 1992 (in Japanese). Nihon syouni hoken kyoukai. Growth standards of Japanese young children. Research by Ministry of Health and Welfare of Japan in 1990. Tokyo: Nihon syouni hoken kyoukai; 1992 (in Japanese).
6.
Zurück zum Zitat Nihon syouni hoken kyoukai. Growth standards of Japanese young children. Research by Ministry of Health and Welfare of Japan in 2000. Tokyo: Nihon syouni hoken kyoukai; 2002 (in Japanese). Nihon syouni hoken kyoukai. Growth standards of Japanese young children. Research by Ministry of Health and Welfare of Japan in 2000. Tokyo: Nihon syouni hoken kyoukai; 2002 (in Japanese).
7.
Zurück zum Zitat Killersreiter B, Grimmer I, Buhrer C, Dudenhausen JW, Obladen M. Early cessation of breast milk feeding in very low birthweight infants. Early Hum Dev. 2001;60:193–205.PubMedCrossRef Killersreiter B, Grimmer I, Buhrer C, Dudenhausen JW, Obladen M. Early cessation of breast milk feeding in very low birthweight infants. Early Hum Dev. 2001;60:193–205.PubMedCrossRef
8.
9.
10.
Zurück zum Zitat Gromada KK, Spangler AK. Breastfeeding twins and higher-order multiples. J Obstet Gynecol Neonatal Nurs. 1998;27:441–9.PubMedCrossRef Gromada KK, Spangler AK. Breastfeeding twins and higher-order multiples. J Obstet Gynecol Neonatal Nurs. 1998;27:441–9.PubMedCrossRef
11.
Zurück zum Zitat Leonard LG. Breastfeeding twins: maternal–infant nutrition. JOGN Nurs. 1982;11:148–53.PubMed Leonard LG. Breastfeeding twins: maternal–infant nutrition. JOGN Nurs. 1982;11:148–53.PubMed
12.
Zurück zum Zitat Neifert M, Thorpe J. Twins: family adjustment, parenting, and infant feeding in the fourth trimester. Clin Obstet Gynecol. 1990;33:102–13.PubMedCrossRef Neifert M, Thorpe J. Twins: family adjustment, parenting, and infant feeding in the fourth trimester. Clin Obstet Gynecol. 1990;33:102–13.PubMedCrossRef
13.
Zurück zum Zitat Stables J. Breastfeeding twins. Nurs Times. 1980;76:1493–4.PubMed Stables J. Breastfeeding twins. Nurs Times. 1980;76:1493–4.PubMed
14.
Zurück zum Zitat Walker M. Breastfeeding quadruplets. J Obstet Gynecol Neonatal Nurs. 1993;22:15.PubMed Walker M. Breastfeeding quadruplets. J Obstet Gynecol Neonatal Nurs. 1993;22:15.PubMed
15.
16.
Zurück zum Zitat Leonard LG. Breastfeeding higher order multiples: enhancing support during the postpartum hospitalization period. J Hum Lact. 2002;18:386–92.PubMedCrossRef Leonard LG. Breastfeeding higher order multiples: enhancing support during the postpartum hospitalization period. J Hum Lact. 2002;18:386–92.PubMedCrossRef
17.
Zurück zum Zitat Leonard LG. Breastfeeding rights of multiple birth families and guidelines for health professionals. Twin Res. 2003;6:34–45.PubMedCrossRef Leonard LG. Breastfeeding rights of multiple birth families and guidelines for health professionals. Twin Res. 2003;6:34–45.PubMedCrossRef
18.
Zurück zum Zitat Mead LJ, Chuffo R, Lawlor-Klean P, Meier PP. Breastfeeding success with preterm quadruplets. J Obstet Gynecol Neonatal Nurs. 1992;21:221–7.PubMedCrossRef Mead LJ, Chuffo R, Lawlor-Klean P, Meier PP. Breastfeeding success with preterm quadruplets. J Obstet Gynecol Neonatal Nurs. 1992;21:221–7.PubMedCrossRef
19.
Zurück zum Zitat Sollid DT, Evans BT, McClowry SG, Garrett A. Breastfeeding multiples. J Perinat Neonatal Nurs. 1989;3:46–65.PubMed Sollid DT, Evans BT, McClowry SG, Garrett A. Breastfeeding multiples. J Perinat Neonatal Nurs. 1989;3:46–65.PubMed
20.
Zurück zum Zitat Spiro A. Supporting parents who wish to breastfeed twins. Health Visit. 1992;65:197–8.PubMed Spiro A. Supporting parents who wish to breastfeed twins. Health Visit. 1992;65:197–8.PubMed
21.
22.
Zurück zum Zitat Emsley A. Breast-feeding twins. Midwives Chron. 1994;107:178–81.PubMed Emsley A. Breast-feeding twins. Midwives Chron. 1994;107:178–81.PubMed
23.
Zurück zum Zitat LaFleur EA, Niesen KM. Breastfeeding conjoined twins. J Obstet Gynecol Neonatal Nurs. 1996;25:241–4.PubMedCrossRef LaFleur EA, Niesen KM. Breastfeeding conjoined twins. J Obstet Gynecol Neonatal Nurs. 1996;25:241–4.PubMedCrossRef
24.
Zurück zum Zitat Schecter A, Papke O, Lis A, Ball M, Ryan JJ, Olson JR, et al. Decrease in milk and blood dioxin levels over two years in a mother nursing twins: estimates of decreased maternal and increased infant dioxin body burden from nursing. Chemosphere. 1996;32:543–9.PubMedCrossRef Schecter A, Papke O, Lis A, Ball M, Ryan JJ, Olson JR, et al. Decrease in milk and blood dioxin levels over two years in a mother nursing twins: estimates of decreased maternal and increased infant dioxin body burden from nursing. Chemosphere. 1996;32:543–9.PubMedCrossRef
25.
Zurück zum Zitat Leonard LG. Breastfeeding triplets: the at-home experience. Public Health Nurs. 2000;17:211–21.PubMedCrossRef Leonard LG. Breastfeeding triplets: the at-home experience. Public Health Nurs. 2000;17:211–21.PubMedCrossRef
26.
Zurück zum Zitat Storr GB. Breastfeeding premature triplets: one woman’s experience. J Hum Lact. 1989;5:74–7.PubMedCrossRef Storr GB. Breastfeeding premature triplets: one woman’s experience. J Hum Lact. 1989;5:74–7.PubMedCrossRef
27.
Zurück zum Zitat Auer C, Gromada KK. A case report of breastfeeding quadruplets: factors perceived as affecting breastfeeding. J Hum Lact. 1998;14:135–41.PubMedCrossRef Auer C, Gromada KK. A case report of breastfeeding quadruplets: factors perceived as affecting breastfeeding. J Hum Lact. 1998;14:135–41.PubMedCrossRef
28.
Zurück zum Zitat Nyqvist KH. Breast-feeding in preterm twins: development of feeding behavior and milk intake during hospital stay and related caregiving practices. J Pediatr Nurs. 2002;17:246–56.PubMedCrossRef Nyqvist KH. Breast-feeding in preterm twins: development of feeding behavior and milk intake during hospital stay and related caregiving practices. J Pediatr Nurs. 2002;17:246–56.PubMedCrossRef
29.
Zurück zum Zitat Saint L, Maggiore P, Hartmann PE. Yield and nutrient content of milk in eight women breast-feeding twins and one woman breast-feeding triplets. Br J Nutr. 1986;56:49–58.PubMedCrossRef Saint L, Maggiore P, Hartmann PE. Yield and nutrient content of milk in eight women breast-feeding twins and one woman breast-feeding triplets. Br J Nutr. 1986;56:49–58.PubMedCrossRef
30.
Zurück zum Zitat Geraghty SR, Pinney SM, Sethuraman G, Roy-Chaudhury A, Kalkwarf HJ. Breast milk feeding rates of mothers of multiples compared to mothers of singletons. Ambul Pediatr. 2004;4:226–31.PubMedCrossRef Geraghty SR, Pinney SM, Sethuraman G, Roy-Chaudhury A, Kalkwarf HJ. Breast milk feeding rates of mothers of multiples compared to mothers of singletons. Ambul Pediatr. 2004;4:226–31.PubMedCrossRef
31.
Zurück zum Zitat Geraghty SR, Khoury JC, Kalkwarf HJ. Human milk pumping rates of mothers of singletons and mothers of multiples. J Hum Lact. 2005;21:413–20.PubMedCrossRef Geraghty SR, Khoury JC, Kalkwarf HJ. Human milk pumping rates of mothers of singletons and mothers of multiples. J Hum Lact. 2005;21:413–20.PubMedCrossRef
32.
Zurück zum Zitat Justesen A, Kunst A. Postneonatal and child mortality among twins in Southern and Eastern Africa. Int J Epidemiol. 2000;29:678–83.PubMedCrossRef Justesen A, Kunst A. Postneonatal and child mortality among twins in Southern and Eastern Africa. Int J Epidemiol. 2000;29:678–83.PubMedCrossRef
33.
Zurück zum Zitat Kaneko A, Kaneita Y, Yokoyama E, Miyake T, Harano S, Suzuki K, et al. Factors associated with exclusive breast-feeding in Japan: for activities to support child-rearing with breast-feeding. J Epidemiol. 2006;16:57–63.PubMedCrossRef Kaneko A, Kaneita Y, Yokoyama E, Miyake T, Harano S, Suzuki K, et al. Factors associated with exclusive breast-feeding in Japan: for activities to support child-rearing with breast-feeding. J Epidemiol. 2006;16:57–63.PubMedCrossRef
34.
Zurück zum Zitat Kavanaugh K, Mead L, Meier P, Mangurten HH. Getting enough: mothers’ concerns about breastfeeding a preterm infant after discharge. J Obstet Gynecol Neonatal Nurs. 1995;24:23–32.PubMedCrossRef Kavanaugh K, Mead L, Meier P, Mangurten HH. Getting enough: mothers’ concerns about breastfeeding a preterm infant after discharge. J Obstet Gynecol Neonatal Nurs. 1995;24:23–32.PubMedCrossRef
35.
Zurück zum Zitat Lau C, Hurst N, Bums P, Schanler RJ. Interaction of stress and lactation differs between mothers of premature singletons and multiples. Adv Exp Med Biol. 2004;554:313–6.PubMed Lau C, Hurst N, Bums P, Schanler RJ. Interaction of stress and lactation differs between mothers of premature singletons and multiples. Adv Exp Med Biol. 2004;554:313–6.PubMed
36.
Zurück zum Zitat Liang R, Gunn AJ, Gunn TR. Can preterm twins breast feed successfully? NZ Med J. 1997;110:209–12.PubMed Liang R, Gunn AJ, Gunn TR. Can preterm twins breast feed successfully? NZ Med J. 1997;110:209–12.PubMed
37.
Zurück zum Zitat Thome M, Alder EM, Ramel A. A population-based study of exclusive breastfeeding in Icelandic women: is there a relationship with depressive symptoms and parenting stress? Int J Nurs Stud. 2006;43:11–20.PubMedCrossRef Thome M, Alder EM, Ramel A. A population-based study of exclusive breastfeeding in Icelandic women: is there a relationship with depressive symptoms and parenting stress? Int J Nurs Stud. 2006;43:11–20.PubMedCrossRef
38.
Zurück zum Zitat Yokoyama Y, Wada S, Sugimoto M, Katayama M, Saito M, Sono J. Breastfeeding rates among singletons, twins and triplets in Japan: a population-based study. Twin Res Hum Genet. 2006;9:298–302.PubMedCrossRef Yokoyama Y, Wada S, Sugimoto M, Katayama M, Saito M, Sono J. Breastfeeding rates among singletons, twins and triplets in Japan: a population-based study. Twin Res Hum Genet. 2006;9:298–302.PubMedCrossRef
39.
Zurück zum Zitat Wilton JM. Breast feeding multiples. In: Keith LG, Papiernik E, Keith DM, Luke B, editors. Multiple Pregnancy: epidemiology, gestation and perinatal outcome. New York: Taylor & Francis; 1995. pp. 553–61. Wilton JM. Breast feeding multiples. In: Keith LG, Papiernik E, Keith DM, Luke B, editors. Multiple Pregnancy: epidemiology, gestation and perinatal outcome. New York: Taylor & Francis; 1995. pp. 553–61.
40.
Zurück zum Zitat Ooki S. Population-based database of multiples in childhood of Ishikawa prefecture, Japan. Twin Res Hum Genet. 2006;9:832–7.PubMedCrossRef Ooki S. Population-based database of multiples in childhood of Ishikawa prefecture, Japan. Twin Res Hum Genet. 2006;9:832–7.PubMedCrossRef
41.
Zurück zum Zitat Ooki S. Language development of Japanese twins in childhood based on maternal reports. Jpn J Health Hum Ecology. 2005;71:12–24. Ooki S. Language development of Japanese twins in childhood based on maternal reports. Jpn J Health Hum Ecology. 2005;71:12–24.
42.
Zurück zum Zitat Ooki S. Motor development of Japanese twins in childhood as reported by mothers. Environ Health Prev Med. 2006;11:55–64. Ooki S. Motor development of Japanese twins in childhood as reported by mothers. Environ Health Prev Med. 2006;11:55–64.
43.
Zurück zum Zitat Ooki S, Yokoyama Y. Physical growth charts from birth to six years of age in Japanese twins. J Epidemiol. 2004;14:151–60.PubMedCrossRef Ooki S, Yokoyama Y. Physical growth charts from birth to six years of age in Japanese twins. J Epidemiol. 2004;14:151–60.PubMedCrossRef
44.
Zurück zum Zitat Ooki S, Asaka A. Comparison of obstetric and birthweight characteristics between the two largest databases of Japanese twins measured in childhood. Twin Res Hum Genet. 2005;8:63–8.PubMedCrossRef Ooki S, Asaka A. Comparison of obstetric and birthweight characteristics between the two largest databases of Japanese twins measured in childhood. Twin Res Hum Genet. 2005;8:63–8.PubMedCrossRef
45.
Zurück zum Zitat Kato N. Reference birthweight range for multiple birth neonates in Japan. BMC Pregnancy Childbirth. 2004;4:2.PubMedCrossRef Kato N. Reference birthweight range for multiple birth neonates in Japan. BMC Pregnancy Childbirth. 2004;4:2.PubMedCrossRef
46.
Zurück zum Zitat Mamiya U. Japan’s maternal and child health handbook. Midwives Chron. 1990;103:314–5.PubMed Mamiya U. Japan’s maternal and child health handbook. Midwives Chron. 1990;103:314–5.PubMed
47.
Zurück zum Zitat Takayanagi K, Iwasaki S, Yoshinaka Y. The role of the maternal and child health handbook system in reducing perinatal mortality in Japan. Clin Perform Qual Health Care. 1993;1:29–33.PubMed Takayanagi K, Iwasaki S, Yoshinaka Y. The role of the maternal and child health handbook system in reducing perinatal mortality in Japan. Clin Perform Qual Health Care. 1993;1:29–33.PubMed
48.
Zurück zum Zitat Ooki S, Asaka A. Zygosity diagnosis in young twins by questionnaire for twins’ mothers and twins’ self-reports. Twin Res. 2004;7:5–12.PubMedCrossRef Ooki S, Asaka A. Zygosity diagnosis in young twins by questionnaire for twins’ mothers and twins’ self-reports. Twin Res. 2004;7:5–12.PubMedCrossRef
49.
Zurück zum Zitat Geraghty SR, Khoury JC, Kalkwarf HJ. Comparison of feeding among multiple birth infants. Twin Res. 2004;7:542–7.PubMedCrossRef Geraghty SR, Khoury JC, Kalkwarf HJ. Comparison of feeding among multiple birth infants. Twin Res. 2004;7:542–7.PubMedCrossRef
50.
Zurück zum Zitat SAS Institute Inc. SAS/STAT user’s guide (version 8). Cary: SAS Institute, Inc.; 1999 SAS Institute Inc. SAS/STAT user’s guide (version 8). Cary: SAS Institute, Inc.; 1999
51.
Zurück zum Zitat Ooki S. Nongenetic factors associated with human handedness and footedness in Japanese twin children. Environ Health Prev Med. 2006;11:304–12.CrossRef Ooki S. Nongenetic factors associated with human handedness and footedness in Japanese twin children. Environ Health Prev Med. 2006;11:304–12.CrossRef
52.
Zurück zum Zitat Addy HA. The breast-feeding of twins. J Trop Pediatr Environ Child Health. 1975;21:231–9.PubMed Addy HA. The breast-feeding of twins. J Trop Pediatr Environ Child Health. 1975;21:231–9.PubMed
53.
Zurück zum Zitat Ford RP, Mitchell EA, Scragg R, Stewart AW, Taylor BJ, Allen EM. Factors adversely associated with breast feeding in New Zealand. J Paediatr Child Health. 1994;30:483–9.PubMedCrossRef Ford RP, Mitchell EA, Scragg R, Stewart AW, Taylor BJ, Allen EM. Factors adversely associated with breast feeding in New Zealand. J Paediatr Child Health. 1994;30:483–9.PubMedCrossRef
54.
Zurück zum Zitat Yokoyama Y, Ooki S. Breast-feeding and bottle-feeding of twins, triplets and higher order multiple births. Nippon Koshu Eisei Zasshi. 2004;51:969–74.PubMed Yokoyama Y, Ooki S. Breast-feeding and bottle-feeding of twins, triplets and higher order multiple births. Nippon Koshu Eisei Zasshi. 2004;51:969–74.PubMed
55.
Zurück zum Zitat Czeszynska MB, Kowalik K. Multiple pregnancy: factors contributing to early infant’s breast-feeding—own experience. Acta Genet Med Gemellol (Roma). 1998;47:191–6. Czeszynska MB, Kowalik K. Multiple pregnancy: factors contributing to early infant’s breast-feeding—own experience. Acta Genet Med Gemellol (Roma). 1998;47:191–6.
56.
Zurück zum Zitat Damato EG, Dowling DA, Madigan EA, Thanattherakul C. Duration of breastfeeding for mothers of twins. J Obstet Gynecol Neonatal Nurs. 2005;34:201–9.PubMedCrossRef Damato EG, Dowling DA, Madigan EA, Thanattherakul C. Duration of breastfeeding for mothers of twins. J Obstet Gynecol Neonatal Nurs. 2005;34:201–9.PubMedCrossRef
57.
Zurück zum Zitat Damato EG, Dowling DA, Standing TS, Schuster SD. Explanation for cessation of breastfeeding in mothers of twins. J Hum Lact. 2005;21:296–304.PubMedCrossRef Damato EG, Dowling DA, Standing TS, Schuster SD. Explanation for cessation of breastfeeding in mothers of twins. J Hum Lact. 2005;21:296–304.PubMedCrossRef
58.
Zurück zum Zitat Flidel-Rimon O, Shinwell ES. Breast-feeding multiples. Multiple pregnancy: epidemiology, gestation, and perinatal outcome, 2nd edn. In: Blickstein I, Keith LG, editors. Multiple pregnancy: epidemiology, gestation, and perinatal outcome, 2nd edn. New York: Taylor & Francis; 2005. pp. 726–33. Flidel-Rimon O, Shinwell ES. Breast-feeding multiples. Multiple pregnancy: epidemiology, gestation, and perinatal outcome, 2nd edn. In: Blickstein I, Keith LG, editors. Multiple pregnancy: epidemiology, gestation, and perinatal outcome, 2nd edn. New York: Taylor & Francis; 2005. pp. 726–33.
59.
Zurück zum Zitat Robarge JP, Reynolds ZB, Groothuis JR. Increased child abuse in families with twins. Res Nurs Health. 1982;5:199–203.PubMedCrossRef Robarge JP, Reynolds ZB, Groothuis JR. Increased child abuse in families with twins. Res Nurs Health. 1982;5:199–203.PubMedCrossRef
60.
Zurück zum Zitat Aarts C, Kylberg E, Hornell A, Hofvander Y, Gebre-Medhin M, Greiner T. How exclusive is exclusive breastfeeding? A comparison of data since birth with current status data. Int J Epidemiol. 2000;29:1041–6.PubMedCrossRef Aarts C, Kylberg E, Hornell A, Hofvander Y, Gebre-Medhin M, Greiner T. How exclusive is exclusive breastfeeding? A comparison of data since birth with current status data. Int J Epidemiol. 2000;29:1041–6.PubMedCrossRef
61.
Zurück zum Zitat Labbok M, Krasovec K. Toward consistency in breastfeeding definitions. Stud Fam Plann. 1990;21:226–30.PubMedCrossRef Labbok M, Krasovec K. Toward consistency in breastfeeding definitions. Stud Fam Plann. 1990;21:226–30.PubMedCrossRef
62.
Zurück zum Zitat Githens PB, Glass CA, Sloan FA, Entman SS. Maternal recall and medical records: an examination of events during pregnancy, childbirth, and early infancy. Birth. 1993;20:136–41.PubMedCrossRef Githens PB, Glass CA, Sloan FA, Entman SS. Maternal recall and medical records: an examination of events during pregnancy, childbirth, and early infancy. Birth. 1993;20:136–41.PubMedCrossRef
63.
Zurück zum Zitat Li R, Scanlon KS, Serdula MK. The validity and reliability of maternal recall of breastfeeding practice. Nutr Rev. 2005;63:103–10.PubMedCrossRef Li R, Scanlon KS, Serdula MK. The validity and reliability of maternal recall of breastfeeding practice. Nutr Rev. 2005;63:103–10.PubMedCrossRef
64.
Zurück zum Zitat Tomeo CA, Rich-Edwards JW, Michels KB, Berkey CS, Hunter DJ, Frazier AL, et al. Reproducibility and validity of maternal recall of pregnancy-related events. Epidemiology. 1999;10:774–7.PubMedCrossRef Tomeo CA, Rich-Edwards JW, Michels KB, Berkey CS, Hunter DJ, Frazier AL, et al. Reproducibility and validity of maternal recall of pregnancy-related events. Epidemiology. 1999;10:774–7.PubMedCrossRef
65.
Zurück zum Zitat Yawn BP, Suman VJ, Jacobsen SJ. Maternal recall of distant pregnancy events. J Clin Epidemiol. 1998;51:399–405.PubMedCrossRef Yawn BP, Suman VJ, Jacobsen SJ. Maternal recall of distant pregnancy events. J Clin Epidemiol. 1998;51:399–405.PubMedCrossRef
Metadaten
Titel
Breast-feeding rates and related maternal and infants’ obstetric factors in Japanese twins
verfasst von
Syuichi Ooki
Publikationsdatum
01.07.2008
Verlag
Springer Japan
Erschienen in
Environmental Health and Preventive Medicine / Ausgabe 4/2008
Print ISSN: 1342-078X
Elektronische ISSN: 1347-4715
DOI
https://doi.org/10.1007/s12199-008-0028-y

Weitere Artikel der Ausgabe 4/2008

Environmental Health and Preventive Medicine 4/2008 Zur Ausgabe