UNICEF: Botswana country statistics. [http://www.unicef.org/infobycountry/botswana_statistics.html]
UNAIDS, NACA: UNGASS Botswana Country Report 2010: Reporting period 2008-2009.
Brocklehurst P, French R: The association between maternal HIV infection and perinatal outcome: a systematic review of the literature and meta-analysis. Br J Obstet Gynaecol. 1998, 105 (8): 836-848.
Article
CAS
PubMed
Google Scholar
Bulterys M, Chao A, Munyemana S, Kurawige JB, Nawrocki P, Habimana P, Kageruka M, Mukantabana S, Mbarutso E, Dushimimana A, et al: Maternal human immunodeficiency virus 1 infection and intrauterine growth: a prospective cohort study in Butare, Rwanda. Pediatr Infect Dis J. 1994, 13 (2): 94-100.
Article
CAS
PubMed
Google Scholar
Langston C, Lewis DE, Hammill HA, Popek EJ, Kozinetz CA, Kline MW, Hanson IC, Shearer WT: Excess intrauterine fetal demise associated with maternal human immunodeficiency virus infection. J Infect Dis. 1995, 172 (6): 1451-1460.
Article
CAS
PubMed
Google Scholar
Leroy V, Ladner J, Nyiraziraje M, De Clercq A, Bazubagira A, Van de Perre P, Karita E, Dabis F: Effect of HIV-1 infection on pregnancy outcome in women in Kigali, Rwanda, 1992-1994. Pregnancy and HIV Study Group. AIDS. 1998, 12 (6): 643-650.
Article
CAS
PubMed
Google Scholar
Rollins NC, Coovadia HM, Bland RM, Coutsoudis A, Bennish ML, Patel D, Newell ML: Pregnancy outcomes in HIV-infected and uninfected women in rural and urban South Africa. J Acquir Immune Defic Syndr. 2007, 44 (3): 321-328.
Article
PubMed
Google Scholar
Ryder RW, Temmerman M: The effect of HIV-1 infection during pregnancy and the perinatal period on maternal and child health in Africa. AIDS. 1991, 5 (Suppl 1): S75-85.
PubMed
Google Scholar
Taha TE, Dallabetta GA, Canner JK, Chiphangwi JD, Liomba G, Hoover DR, Miotti PG: The effect of human immunodeficiency virus infection on birthweight, and infant and child mortality in urban Malawi. Int J Epidemiol. 1995, 24 (5): 1022-1029.
Article
CAS
PubMed
Google Scholar
Temmerman M, Plummer FA, Mirza NB, Ndinya-Achola JO, Wamola IA, Nagelkerke N, Brunham RC, Piot P: Infection with HIV as a risk factor for adverse obstetrical outcome. AIDS. 1990, 4 (11): 1087-1093.
Article
CAS
PubMed
Google Scholar
Habib NA, Daltveit AK, Bergsjo P, Shao J, Oneko O, Lie RT: Maternal HIV status and pregnancy outcomes in northeastern Tanzania: a registry-based study. BJOG. 2008, 115 (5): 616-624.
Article
CAS
PubMed
Google Scholar
Habib NA, Dalveit AK, Mlay J, Oneko O, Shao J, Bergsjo P, Lie-Nielsen E, Lie RT: Birthweight and perinatal mortality among singletons and twins in north-eastern Tanzania. Scand J Public Health. 2008, 36 (7): 761-768.
Article
PubMed
Google Scholar
Kumwenda NI, Hoover DR, Mofenson LM, Thigpen MC, Kafulafula G, Li Q, Mipando L, Nkanaunena K, Mebrahtu T, Bulterys M, Fowler MG, Taha TE: Extended antiretroviral prophylaxis to reduce breast-milk HIV-1 transmission. N Engl J Med. 2008, 359 (2): 119-129.
Article
CAS
PubMed
Google Scholar
Shapiro RL, Hughes MD, Ogwu A, Kitch D, Lockman S, Moffat C, Makhema J, Moyo S, Thior I, McIntosh K, van Widenfelt E, Leidner J, Powis K, Asmelash A, Tumbare E, Zwerski S, Sharma U, Handelsman E, Mburu K, Jayeoba O, Moko E, Souda S, Lubega E, Akhtar M, Wester C, Tuomola R, Snowden W, Martinez-Tristani M, Mazhani L, Essex M: Antiretroviral regimens in pregnancy and breast-feeding in Botswana. N Engl J Med. 2010, 362 (24): 2282-2294.
Article
CAS
PubMed
PubMed Central
Google Scholar
De Vincenzi I, Kesho Bora Study Group: Triple antiretroviral compared with zidovudine and single-dose nevirapine prophylaxis during pregnancy and breastfeeding for prevention of mother-to-child transmission of HIV-1 (Kesho Bora study): a randomised controlled trial. Lancet Infect Dis. 2011, 11: 171-80.
Article
PubMed
Google Scholar
Machado ES, Hofer CB, Costa TT, Nogueira SA, Oliveira RH, Abreu TF, Evangelista LA, Farias IF, Mercadante RT, Garcia MF, Neves RC, Costa VM, Lambert JS: Pregnancy outcome in women infected with HIV-1 receiving combination antiretroviral therapy before versus after conception. Sex Transm Infect. 2009, 85 (2): 82-87.
Article
CAS
PubMed
Google Scholar
Ekouevi DK, Coffie PA, Becquet R, Tonwe-Gold B, Horo A, Thiebaut R, Leroy V, Blanche S, Dabis F, Abrams EJ: Antiretroviral therapy in pregnant women with advanced HIV disease and pregnancy outcomes in Abidjan, Cote d'Ivoire. AIDS. 2008, 22 (14): 1815-1820.
Article
CAS
PubMed
Google Scholar
Townsend CL, Cortina-Borja M, Peckham CS, Tookey PA: Antiretroviral therapy and premature delivery in diagnosed HIV-infected women in the United Kingdom and Ireland. AIDS. 2007, 21 (8): 1019-1026.
Article
PubMed
Google Scholar
Chen JY, Ribaudo H, Ogwu a, Lockman S, Syab P, Wester C, Tumbare E, Moffar H, Makhema J, Essex M, Shapiro RL: Risk factors for adverse pregnancy outcomes among HIV-infected and HIV-uninfected women in Gaborone and Molepolole, Botswana. Conference on Retroviruses and Opportunistic Infections. 2009, Montreal
Google Scholar
United Nations Children's Fund and World Health Organization: Low birthweight: country, regional and global estimates. 2004, New York: UNICEF, 1-31.
Google Scholar
Bonellie S, Chalmers J, Gray R, Greer I, Jarvis S, Williams C: Centile charts for birthweight for gestational age for Scottish singleton births. BMC Pregnancy Childbirth. 2008, 8: 5-
Article
PubMed
PubMed Central
Google Scholar
Briand N, Mandelbrot L, Le Chenadec J, Tubiana R, Teglas JP, Faye A, Dollfus C, Rouzioux C, Blanche S, Warszawski J: No relation between in-utero exposure to HAART and intrauterine growth retardation. AIDS. 2009, 23 (10): 1235-1243.
Article
CAS
PubMed
Google Scholar
Ferdynus C, Quantin C, Abrahamowicz M, Platt R, Burguet A, Sagot P, Binquet C, Gouyon JB: Can birth weight standards based on healthy populations improve the identification of small-for-gestational-age newborns at risk of adverse neonatal outcomes?. Pediatrics. 2009, 123 (2): 723-730.
Article
PubMed
Google Scholar
W.H.O: Neonatal and perinatal mortality: country, regional and global estimates. 2006, Geneva: World Health Organization, 75-
Google Scholar
Oken E, Kleinman KP, Rich-Edwards J, Gillman MW: A nearly continuous measure of birth weight for gestational age using a United States national reference. BMC Pediatrics. 2003, 3 (6): 10-
Google Scholar
de Onis M, Blossner M, Villar J: Levels and patterns of intrauterine growth retardation in developing countries. Eur J Clin Nutr. 1998, 52 (Suppl 1): S5-15.
PubMed
Google Scholar
Fok TF, So HK, Wong E, Ng PC, Chang A, Lau J, Chow CB, Lee WH: Updated gestational age specific birth weight, crown-heel length, and head circumference of Chinese newborns. Arch Dis Child Fetal Neonatal Ed. 2003, 88 (3): F229-236.
Article
CAS
PubMed
PubMed Central
Google Scholar
Kok JH, den Ouden AL, Verloove-Vanhorick SP, Brand R: Outcome of very preterm small for gestational age infants: the first nine years of life. Br J Obstet Gynaecol. 1998, 105 (2): 162-168.
Article
CAS
PubMed
Google Scholar
Malloy MH: Size for gestational age at birth: impact on risk for sudden infant death and other causes of death, USA 2002. Arch Dis Child Fetal Neonatal Ed. 2007, 92 (6): F473-478.
Article
PubMed
PubMed Central
Google Scholar
Wennergren M, Wennergren G, Vilbergsson G: Obstetric characteristics and neonatal performance in a four-year small for gestational age population. Obstet Gynecol. 1988, 72 (4): 615-620.
CAS
PubMed
Google Scholar
Alshimmiri MM, Al-Saleh EA, Alsaeid K, Hammoud MS, Al-Harmi JA: Birthweight percentiles by gestational age in Kuwait. Arch Gynecol Obstet. 2004, 269 (2): 111-116.
Article
CAS
PubMed
Google Scholar
Davidson S, Sokolover N, Erlich A, Litwin A, Linder N, Sirota L: New and improved Israeli reference of birth weight, birth length, and head circumference by gestationa age: a hospital-based study. Israeli Medical Association Journal. 2008, 10: 130-134.
Google Scholar
Chapter 3. Splines. in Semiparametric regression for the Social Sciences. Edited by: Keele LJ. 2008, John Wiley and Sons
Wei Y, Pere A, Koenker R, He X: Quantile regression methods for reference growth charts. Stat Med. 2006, 25: 1369-1382.
Article
PubMed
Google Scholar
Devlin T, Weeks B: Spline functions for logistic regression modeling. Proc Eleventh Annual SAS Users Group International. 1986, SAS Institute, Inc., 646-651.
Google Scholar
Arbuckle TE, Wilkins R, Sherman GJ: Birth weight percentiles by gestational age in Canada. Obstet Gynecol. 1993, 81 (1): 39-48.
CAS
PubMed
Google Scholar
Rios JM, Tufino-Olivares E, Reza-Lopez S, Sanin LH, Levario-Carrillo M: Birthweight percentiles by gestational age and gender for children in the North of Mexico. Paediatr Perinat Epidemiol. 2008, 22 (2): 188-194.
Article
PubMed
Google Scholar
Roberts CL, Lancaster PA: Australian national birthweight percentiles by gestational age. Med J Aust. 1999, 170 (3): 114-118.
CAS
PubMed
Google Scholar
Alexander GR, Himes JH, Kaufman RB, Mor J, Kogan M: A United States national reference for fetal growth. Obstet Gynecol. 1996, 87 (2): 163-168.
Article
CAS
PubMed
Google Scholar
United Nations: World Population Prospects: The 2008 Revision. 2009, New York: Department of Economic and Social Affairs, Population Division
Google Scholar
Blanc AK, Wardlaw T: Monitoring low birth weight: an evaluation of international estimates and an updated estimation procedure. Bull World Health Organ. 2005, 83 (3): 178-185.
PubMed
PubMed Central
Google Scholar
Zhang J, Bowes WA: Birth-weight-for-gestational-age patterns by race, sex, and parity in the United States population. Obstet Gynecol. 1995, 86 (2): 200-208.
Article
CAS
PubMed
Google Scholar
Kramer MS, Demissie K, Yang H, Platt RW, Sauve R, Liston R: The contribution of mild and moderate preterm birth to infant mortality. Fetal and Infant Health Study Group of the Canadian Perinatal Surveillance System. JAMA. 2000, 284 (7): 843-849.
Article
CAS
PubMed
Google Scholar
McLean FH, Boyd ME, Usher RH, Kramer MS: Postterm infants: too big or too small?. Am J Obstet Gynecol. 1991, 164 (2): 619-624.
Article
CAS
PubMed
Google Scholar
Wilcox AJ, Skjaerven R: Birth weight and perinatal mortality: the effect of gestational age. Am J Public Health. 1992, 82 (3): 378-382.
Article
CAS
PubMed
PubMed Central
Google Scholar
Kramer MS, McLean FH, Boyd ME, Usher RH: The validity of gestational age estimation by menstrual dating in term, preterm, and postterm gestations. JAMA. 1988, 260 (22): 3306-3308.
Article
CAS
PubMed
Google Scholar
Wilcox AJ: On the importance--and the unimportance--of birthweight. Int J Epidemiol. 2001, 30 (6): 1233-1241.
Article
CAS
PubMed
Google Scholar
Skjaerven R, Gjessing HK, Bakketeig LS: Birthweight by gestational age in Norway. Acta Obstet Gynecol Scand. 2000, 79 (6): 440-449.
Article
CAS
PubMed
Google Scholar
Kallen B: A birth weight for gestational age standard based on data in the Swedish Medical Birth Registry, 1985-1989. Eur J Epidemiol. 1995, 11 (5): 601-606.
Article
CAS
PubMed
Google Scholar
Joseph KS, Kramer MS, Allen AC, Mery LS, Platt RW, Wen SW: Implausible birth weight for gestational age. Am J Epidemiol. 2001, 153 (2): 110-113.
Article
CAS
PubMed
Google Scholar
Platt RW, Abrahamowicz M, Kramer MS, Joseph KS, Mery L, Blondel B, Breart G, Wen SW: Detecting and eliminating erroneous gestational ages: a normal mixture model. Stat Med. 2001, 20 (23): 3491-3503.
Article
CAS
PubMed
Google Scholar
HIV prevalence estimates--United States, 2006. MMWR Morb Mortal Wkly Rep. 2008, 57 (39): 1073-1076.