On the inadequacy of quinquennial data for analyzing the paternal age effect on Down's syndrome rates.

Paternal age and the occurrence of birth defects. Am J Hum Genet (1986) 1.50

Risk of dominant mutation in older fathers: evidence from osteogenesis imperfecta. J Med Genet (1986) 1.27

An analysis for paternal-age effect in Ohio's Down syndrome births, 1970-1980. Am J Hum Genet (1983) 0.84

Exclusion of chromosomal mosaicism: tables of 90%, 95% and 99% confidence limits and comments on use. Am J Hum Genet (1977) 2.75

Spontaneous deaths of fetuses with chromosomal abnormalities diagnosed prenatally. N Engl J Med (1978) 2.66

Maternal age-specific rates of 47,+21 and other cytogenetic abnormalities diagnosed in the first trimester of pregnancy in chorionic villus biopsy specimens: comparison with rates expected from observations at amniocentesis. Am J Hum Genet (1988) 2.38

The distribution of chromosomal genotypes associated with Turner's syndrome: livebirth prevalence rates and evidence for diminished fetal mortality and severity in genotypes associated with structural X abnormalities or mosaicism. Hum Genet (1983) 2.29

Estimated rates of Down syndrome in live births by one year maternal age intervals for mothers aged 20-49 in a New York State study-implications of the risk figures for genetic counseling and cost-benefit analysis of prenatal diagnosis programs. Birth Defects Orig Artic Ser (1977) 2.28

Rates of chromosome abnormalities at different maternal ages. Obstet Gynecol (1981) 2.11

Behavioral implications of the human XYY genotype. Science (1973) 2.02

Chromosomal abnormality rates at amniocentesis and in live-born infants. JAMA (1983) 1.95

Down syndrome in live births by single year maternal age interval in a Swedish study: comparison with results from a New York State study. Am J Hum Genet (1978) 1.94

Rates of mutant and inherited structural cytogenetic abnormalities detected at amniocentesis: results on about 63,000 fetuses. Ann Hum Genet (1987) 1.89

Goodness-of-fit based confidence intervals for estimates of the size of a closed population. Stat Med (1984) 1.84

Chromosome abnormalities and spontaneous fetal death following amniocentesis: further data and associations with maternal age. Am J Hum Genet (1983) 1.79

The natural history of cytogenetically abnormal fetuses detected at midtrimester amniocentesis which are not terminated electively: new data and estimates of the excess and relative risk of late fetal death associated with 47,+21 and some other abnormal karyotypes. Am J Hum Genet (1989) 1.69

Folic acid: abortifacient or pseudoabortifacient? Am J Med Genet (2000) 1.69

The effects of prenatal diagnosis, population ageing, and changing fertility rates on the live birth prevalence of Down syndrome in New York State, 1983-1992. Prenat Diagn (1996) 1.68

Capture-recapture methods. Lancet (1992) 1.67

Differences between rates of trisomy 21 (Down syndrome) and other chromosomal abnormalities diagnosed in livebirths and in cells cultured after second-trimester amniocentesis--suggested explanations and implications for genetic counseling and program planning. Birth Defects Orig Artic Ser (1978) 1.61

Cigarette smoking and Down syndrome. Am J Hum Genet (1985) 1.59

Frequency of Down syndrome in livebirths by single-year maternal age interval: results of a Massachusetts study. Teratology (1978) 1.56

Apparent "in situ" clone of cytogenetically marked ataxia-telangiectasia lymphocytes. Humangenetik (1975) 1.56

Early in vitro division of PHA stimulated cord blood lymphocytes: implications for study of chromosome breakage. Am J Hum Genet (1976) 1.56

Parental age and unbalanced Robertsonian translocations associated with Down syndrome and Patau syndrome: comparison with maternal and paternal age effects for 47, +21 and 47, +13. Ann Hum Genet (1984) 1.54

Rates of trisomies 21, 18, 13 and other chromosome abnormalities in about 20 000 prenatal studies compared with estimated rates in live births. Hum Genet (1982) 1.53

Cardiovascular birth defects and antenatal exposure to female sex hormones. N Engl J Med (1977) 1.53

Neural tube rupture as a cause of neural tube defects. Lancet (1992) 1.50

Normal or affected controls in case-control studies of congenital malformations and other birth defects: reporting bias issues. Epidemiology (1993) 1.47

Second-trimester maternal serum alpha-fetoprotein levels and the risk of subsequent fetal death. N Engl J Med (1991) 1.45

Statistical and logical considerations in evaluating the association of prenatal folic-acid supplementation with pregnancy loss. Am J Med Genet (2001) 1.41

Joint estimation of Down syndrome risk and ascertainment rates: a meta-analysis of nine published data sets. Prenat Diagn (1998) 1.41

Cytogenetic and epidemiological findings in Down syndrome, England and Wales 1989 to 1993. National Down Syndrome Cytogenetic Register and the Association of Clinical Cytogeneticists. J Med Genet (1996) 1.37

Death certificate reports of cardiovascular disorders in children: comparison with diagnoses in a pediatric cardiology registry. J Chronic Dis (1977) 1.33

Rates of mutant structural chromosome rearrangements in human fetuses: data from prenatal cytogenetic studies and associations with maternal age and parental mutagen exposure. Am J Hum Genet (1983) 1.32

The frequency of 47,+21,47,+18, and 47,+13 at the uppermost extremes of maternal ages: results on 56,094 fetuses studied prenatally and comparisons with data on livebirths. Hum Genet (1984) 1.31

Cerebral gigantism: endocrinological and clinical observations of six patients including a congenital giant, concordant monozygotic twins, and a child who acheived adult gigantic size. J Pediatr (1967) 1.30

Down's syndrome: percentage reporting on birth certificates and single year maternal age risk rates for Ohio 1970-79: comparison with upstate New York data. Am J Public Health (1981) 1.25

Muddling genetic discrimination. Am J Hum Genet (1992) 1.24

Estimates of maternal age-specific risks of Down-syndrome birth in women aged 34-41. Lancet (1976) 1.23

Inherited ring chromosomes: an analysis of published cases. Hum Genet (1991) 1.23

Risks of unbalanced progeny at amniocentesis to carriers of chromosome rearrangements: data from United States and Canadian laboratories. Am J Med Genet (1989) 1.22

Unbalanced Robertsonian translocations associated with Down's syndrome or Patau's syndrome: chromosome subtype, proportion inherited, mutation rates, and sex ratio. Hum Genet (1981) 1.20

Paternal age and Down syndrome in British Columbia. Am J Hum Genet (1981) 1.19

Congenital asymmetry associated with trisomy 18 mosaicism. Am J Dis Child (1965) 1.18

Incidence and prevalence as measures of the frequency of birth defects. Am J Epidemiol (1982) 1.15

Decreased HLA heterogeneity in parents of children with Down syndrome. Am J Hum Genet (1983) 1.15

Genetic distinctions are not necessarily examples of genetic discrimination. Am J Hum Genet (1992) 1.15

A simple function for maternal-age-specific rates of Down syndrome in the 20-to-49-year age range and its biological implications. Am J Hum Genet (1980) 1.13

Rates of Down's syndrome in live births and at midtrimester amniocentesis. Lancet (1978) 1.11

Massachusetts Department of Public Health. Use of prenatal cytogenetic diagnosis in New York State. N Engl J Med (1981) 1.09

Nausea and vomiting of pregnancy and association with pregnancy outcome. Am J Obstet Gynecol (1986) 1.09

The imprecision in rates of Down syndrome by 1-year maternal age intervals: a critical analysis of rates used in biochemical screening. Prenat Diagn (1994) 1.09

Temporal increase in the rate of Down syndrome livebirths to older mothers in New York State. J Med Genet (1981) 1.09

Rates of Down syndrome at livebirth by one-year maternal age intervals in studies with apparent close to complete ascertainment in populations of European origin: a proposed revised rate schedule for use in genetic and prenatal screening. Am J Med Genet (1996) 1.08

Validity of Bernoulli census, log-linear, and truncated binomial models for correcting for underestimates in prevalence studies. Am J Epidemiol (1982) 1.08

Extra structurally abnormal chromosomes (ESAC) detected at amniocentesis: frequency in approximately 75,000 prenatal cytogenetic diagnoses and associations with maternal and paternal age. Am J Hum Genet (1987) 1.07

Case ascertainment for state-based birth defects registries: characteristics of unreported infants ascertained through birth certificates and their impact on registry statistics in New York state. Paediatr Perinat Epidemiol (1996) 1.05

Dietary cravings and aversions during pregnancy. Am J Clin Nutr (1978) 1.05

Rates of trisomy 18 in livebirths, stillbirths, and at amniocentesis. Birth Defects Orig Artic Ser (1979) 1.04

False-positive reporting of Down syndrome on Ohio and New York birth certificates. Genet Epidemiol (1985) 1.03

Use of capture-recapture analyses in fetal alcohol syndrome surveillance in Alaska. Am J Epidemiol (1995) 1.03

Problem of offering unsolicited clinical genetic advice and diagnoses to nonmedical friends and strangers. Am J Med Genet (1997) 1.02

International variation in reported livebirth prevalence rates of Down syndrome, adjusted for maternal age. J Med Genet (1999) 1.00

X-ray Absorption Spectroscopic Investigation of Sulfur Sites in Coal: Organic Sulfur Identification. Science (1984) 1.00

Paternal age and Down's syndrome genotypes diagnosed prenatally: no association in New York state data. Hum Genet (1982) 1.00

Maternal cigarette smoking, Down syndrome in live births, and infant race. Am J Hum Genet (1988) 0.99

The ratio of de novo unbalanced translocation to 47, trisomy 21 Down syndrome. A new method for human mutation surveillance and an apparent recent change in mutation rate resulting in human interchange trisomies in one jurisdiction. Mutat Res (1978) 0.98

[Muscular manifestations of human cysticercosis]. Rhumatologie (1970) 0.97

Inherited structural cytogenetic abnormalities detected incidentally in fetuses diagnosed prenatally: frequency, parental-age associations, sex-ratio trends, and comparisons with rates of mutants. Am J Hum Genet (1984) 0.96

Trends in utilization of prenatal cytogenetic diagnosis by New York State residents in 1979 and 1980. Am J Public Health (1983) 0.96

The association between maternal serum alpha-fetoprotein and preterm birth, small for gestational age infants, preeclampsia, and placental complications. Obstet Gynecol (1996) 0.94

The human simian crease and its variants. A model for investigation of serious congenital malformation. Birth Defects Orig Artic Ser (1974) 0.93

Maternal alcohol and tobacco consumption and their association with nausea and vomiting during pregnancy. Acta Obstet Gynecol Scand (1979) 0.92

Use of Bernoulli census and log-linear methods for estimating the prevalence of spina bifida in livebirths and the completeness of vital record reports in New York State. Am J Epidemiol (1980) 0.92

Maternal age, paternal age, and human chromosome abnormality: nature, magnitude, etiology, and mechanisms of effects. Basic Life Sci (1985) 0.92

Rates of 47, + 13 amd 46 translocation D/13 Patau syndrome in live births and comparison with rates in fetal deaths and at amniocentesis. Am J Hum Genet (1980) 0.91

Prevalence of XYY and XXY karyotypes in 337 nonretarded young offenders. N Engl J Med (1970) 0.91

Rates of Down's syndrome at the upper extreme of maternal age--absence of a "leveling" effect and evidence for artifacts resulting from analyses of rates by five-year maternal age intervals. Am J Epidemiol (1980) 0.90

Deoxyribonucleic acid replication and mapping of the D-1 chromosome. A study of two patients with partial trisomy D-1. Am J Dis Child (1966) 0.90

Height and antisocial behavior in XY and XYY boys. Science (1971) 0.90

A search for evidence for a paternal age effect independent of a maternal age effect in birth certificate reports of Down's syndrome in New York state. Am J Epidemiol (1980) 0.89

Some aspects of the epidemiology of human minor birth defects and morphological variants in a completely ascertained newborn population (Madison study). Teratology (1976) 0.88

Ultrasound and fetal chromosome abnormalities. Lancet (1992) 0.88