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Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1786 2
1795 1
1797 1
1799 1
1803 1
1807 1
1809 1
1815 1
1816 1
1820 1
1823 1
1825 1
1826 2
1827 1
1830 1
1831 1
1833 1
1838 1
1842 1
1845 1
1846 1
1847 1
1848 2
1851 1
1853 1
1855 1
1857 1
1862 1
1866 4
1869 1
1870 2
1875 2
1878 1
1885 1
1889 1
1890 1
1897 1
1898 1
1901 1
1905 1
1906 1
1908 1
1909 1
1910 2
1912 1
1913 1
1915 1
1916 1
1917 8
1919 4
1921 2
1922 2
1923 4
1924 2
1925 6
1926 3
1927 4
1928 4
1929 2
1930 1
1931 2
1932 4
1933 3
1935 1
1936 3
1937 1
1939 5
1941 1
1942 2
1944 1
1945 1
1946 3
1947 1
1948 10
1949 3
1950 7
1951 7
1952 1
1953 9
1954 6
1955 8
1956 4
1957 7
1958 6
1959 11
1960 3
1961 9
1962 16
1963 18
1964 22
1965 20
1966 23
1967 25
1968 33
1969 33
1970 39
1971 27
1972 31
1973 40
1974 52
1975 456
1976 468
1977 446
1978 475
1979 491
1980 542
1981 558
1982 587
1983 691
1984 761
1985 764
1986 831
1987 854
1988 928
1989 1094
1990 1159
1991 1182
1992 1262
1993 1401
1994 1369
1995 1602
1996 1694
1997 1674
1998 1805
1999 1929
2000 1995
2001 2043
2002 2177
2003 2271
2004 2483
2005 2730
2006 2907
2007 3179
2008 3390
2009 3466
2010 3674
2011 3963
2012 4198
2013 4459
2014 4650
2015 4730
2016 4800
2017 4712
2018 4942
2019 5291
2020 5921
2021 6483
2022 6334
2023 6258
2024 6640
2025 42

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Page 1
Dementia ascertainment using existing data in UK longitudinal and cohort studies: a systematic review of methodology.
Sibbett RA, Russ TC, Deary IJ, Starr JM. Sibbett RA, et al. BMC Psychiatry. 2017 Jul 3;17(1):239. doi: 10.1186/s12888-017-1401-4. BMC Psychiatry. 2017. PMID: 28673273 Free PMC article. Review.
Data sources for ascertainment included: death records, national datasets, research databases and hospital records among others. 36 articles used existing data alone for ascertainment, of which 27 used only a single data source. ...Quality scores were better for art …
Data sources for ascertainment included: death records, national datasets, research databases and hospital records among others. 36 a …
SNP ascertainment bias in population genetic analyses: why it is important, and how to correct it.
Lachance J, Tishkoff SA. Lachance J, et al. Bioessays. 2013 Sep;35(9):780-6. doi: 10.1002/bies.201300014. Epub 2013 Jul 9. Bioessays. 2013. PMID: 23836388 Free PMC article. Review.
This is because genotyping arrays contain biased sets of pre-ascertained SNPs. In this short review, we use comparisons between high-coverage whole genome sequences of African hunter-gatherers and data from genotyping arrays to highlight how SNP ascertainment bias d …
This is because genotyping arrays contain biased sets of pre-ascertained SNPs. In this short review, we use comparisons between high- …
Ascertainment rate of SARS-CoV-2 infections from healthcare and community testing in the UK.
Colman E, Puspitarani GA, Enright J, Kao RR. Colman E, et al. J Theor Biol. 2023 Feb 7;558:111333. doi: 10.1016/j.jtbi.2022.111333. Epub 2022 Nov 5. J Theor Biol. 2023. PMID: 36347306 Free PMC article.
The proportion of SARS-CoV-2 infections ascertained through healthcare and community testing is generally unknown and expected to vary depending on natural factors and changes in test-seeking behaviour. Here we use population surveillance data and reported daily case numbe …
The proportion of SARS-CoV-2 infections ascertained through healthcare and community testing is generally unknown and expected to var …
How array design creates SNP ascertainment bias.
Geibel J, Reimer C, Weigend S, Weigend A, Pook T, Simianer H. Geibel J, et al. PLoS One. 2021 Mar 30;16(3):e0245178. doi: 10.1371/journal.pone.0245178. eCollection 2021. PLoS One. 2021. PMID: 33784304 Free PMC article.
This affects population genetic estimators and is known as SNP ascertainment bias. We investigated factors contributing to ascertainment bias in array development by redesigning the Axiom Genome-Wide Chicken Array in silico and evaluating changes in allele frequency …
This affects population genetic estimators and is known as SNP ascertainment bias. We investigated factors contributing to ascerta …
Ascertainment of chronic diseases in the Canadian longitudinal study on aging (CLSA), systematic review.
Raina PS, Wolfson C, Kirkland SA, Keshavarz H, Griffith LE, Patterson C, Uniat J, Strople G, Pelletier A, Angus CL. Raina PS, et al. Can J Aging. 2009 Sep;28(3):275-85. doi: 10.1017/S071498080999002X. Can J Aging. 2009. PMID: 19860982 Review.
ABSTRACTStandard clinical diagnostic procedures are often inappropriate and frequently not feasible to apply in population-based studies, yet ascertaining accurate disease status is essential. We conducted a systematic review to identify algorithms, criteria, and tools use …
ABSTRACTStandard clinical diagnostic procedures are often inappropriate and frequently not feasible to apply in population-based studies, ye …
Ascertainment of causes of neonatal death using verbal autopsy in Rishikesh, Uttarakhand: A cross-sectional study.
Mishra A, Sinha S, Bhadoria AS, Khare C. Mishra A, et al. J Family Med Prim Care. 2023 May;12(5):967-970. doi: 10.4103/jfmpc.jfmpc_1729_22. Epub 2023 May 31. J Family Med Prim Care. 2023. PMID: 37448920 Free PMC article.
Understanding the causes and contextual factors that contribute to neonatal deaths is critical for developing a health programme and policy. Therefore, this study was aimed to ascertain causes of neonatal deaths using verbal autopsy in Rishikesh, Uttarakhand. MATERIAL AND …
Understanding the causes and contextual factors that contribute to neonatal deaths is critical for developing a health programme and policy. …
Prenatal ascertainment of OEIS complex/cloacal exstrophy - 15 new cases and literature review.
Keppler-Noreuil K, Gorton S, Foo F, Yankowitz J, Keegan C. Keppler-Noreuil K, et al. Am J Med Genet A. 2007 Sep 15;143A(18):2122-8. doi: 10.1002/ajmg.a.31897. Am J Med Genet A. 2007. PMID: 17702047 Free article. Review.
The purposes of this study were to: (1) present the prenatal ascertainment of OEIS complex in this series of 15 cases identified through several different sources compared to the literature, and (2) discuss the relationship of these prenatal findings to possible abnormal d …
The purposes of this study were to: (1) present the prenatal ascertainment of OEIS complex in this series of 15 cases identified thro …
Retrospective delirium ascertainment from case notes: a retrospective cohort study.
Geriatric Medicine Research Collaborative. Geriatric Medicine Research Collaborative. BMJ Open. 2021 May 28;11(5):e042440. doi: 10.1136/bmjopen-2020-042440. BMJ Open. 2021. PMID: 34049901 Free PMC article.
OBJECTIVES: This study sets out to ascertain if recognition of delirium impacts on patient outcomes. DESIGN: Retrospective cohort study. ...PARTICIPANTS: Six hundred and fifty-six older adults aged 65 years admitted on 14 September 2018. MEASUREMENTS: Delirium was ascer …
OBJECTIVES: This study sets out to ascertain if recognition of delirium impacts on patient outcomes. DESIGN: Retrospective cohort stu …
Ascertainment rate of novel coronavirus disease (COVID-19) in Japan.
Omori R, Mizumoto K, Nishiura H. Omori R, et al. Int J Infect Dis. 2020 Jul;96:673-675. doi: 10.1016/j.ijid.2020.04.080. Epub 2020 May 8. Int J Infect Dis. 2020. PMID: 32389846 Free PMC article.
We estimated the number of severe and non-severe cases, accounting for under-ascertainment. RESULTS: The ascertainment rate of non-severe cases was estimated at 0.44 (95% confidence interval 0.37-0.50), indicating that the unbiased number of non-severe cases would b …
We estimated the number of severe and non-severe cases, accounting for under-ascertainment. RESULTS: The ascertainment rate of …
Ascertainment of Aspirin Exposure Using Structured and Unstructured Large-scale Electronic Health Record Data.
Bustamante R, Earles A, Murphy JD, Bryant AK, Patterson OV, Gawron AJ, Kaltenbach T, Whooley MA, Fisher DA, Saini SD, Gupta S, Liu L. Bustamante R, et al. Med Care. 2019 Oct;57(10):e60-e64. doi: 10.1097/MLR.0000000000001065. Med Care. 2019. PMID: 30807451 Free PMC article.
OBJECTIVES: Develop and validate a strategy for ascertaining aspirin exposure, utilizing a combination of structured and unstructured data. ...CONCLUSIONS: A readily accessible approach utilizing a combination of structured medication records and query of unstructured data …
OBJECTIVES: Develop and validate a strategy for ascertaining aspirin exposure, utilizing a combination of structured and unstructured …
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