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

Year Number of Results
1920 1
1923 1
1931 1
1936 1
1947 3
1948 2
1951 2
1952 2
1954 3
1955 1
1957 1
1958 1
1959 2
1960 2
1962 2
1963 1
1964 6
1965 3
1966 11
1967 12
1968 11
1969 4
1970 9
1971 8
1972 11
1973 19
1974 21
1975 62
1976 118
1977 113
1978 134
1979 147
1980 163
1981 174
1982 217
1983 198
1984 213
1985 222
1986 246
1987 268
1988 271
1989 295
1990 390
1991 411
1992 446
1993 575
1994 641
1995 814
1996 982
1997 1109
1998 1358
1999 1503
2000 1851
2001 1991
2002 2077
2003 2427
2004 2646
2005 2849
2006 3082
2007 3307
2008 3246
2009 3413
2010 3494
2011 3619
2012 3703
2013 3726
2014 3765
2015 3759
2016 3556
2017 3395
2018 3553
2019 3368
2020 3617
2021 1560
2022 1
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71,724 results
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Page 1
Causal null hypotheses of sustained treatment strategies: What can be tested with an instrumental variable?
Swanson SA, Labrecque J, Hernán MA. Swanson SA, et al. Eur J Epidemiol. 2018 Aug;33(8):723-728. doi: 10.1007/s10654-018-0396-6. Epub 2018 May 2. Eur J Epidemiol. 2018. PMID: 29721747 Free PMC article. Review.
Sometimes instrumental variable methods are used to test whether a causal effect is null rather than to estimate the magnitude of a causal effect. However, when instrumental variable methods are applied to time-varying exposures, as in many Mendelian randomization studies, …
Sometimes instrumental variable methods are used to test whether a causal effect is null rather than to estimate the magnitude of a c …
Null Alleles and FIS FST Correlations.
Waples RS. Waples RS. J Hered. 2018 May 11;109(4):457-461. doi: 10.1093/jhered/esy013. J Hered. 2018. PMID: 29554281
The result is an information gap regarding scenarios that include null alleles but have unbiased estimates of FST. Simulations were used to fill this information gap, with the following results: 1) converting ~10% of alleles to nulls substantially reduced apparent heterozy …
The result is an information gap regarding scenarios that include null alleles but have unbiased estimates of FST. Simulations were u …
CD28 (null) CD4 T-cell expansions in autoimmune disease suggest a link with cytomegalovirus infection.
Bano A, Pera A, Almoukayed A, Clarke THS, Kirmani S, Davies KA, Kern F. Bano A, et al. F1000Res. 2019 Mar 25;8:F1000 Faculty Rev-327. doi: 10.12688/f1000research.17119.1. eCollection 2019. F1000Res. 2019. PMID: 30984377 Free PMC article. Review.
Immunosenescence is often associated with the presence of an expanded population of CD4 T cells lacking expression of CD28 (CD28 (null)). These highly cytotoxic CD4 T cells were isolated from disease-affected tissues in patients with rheumatoid arthritis, systemic lupus er …
Immunosenescence is often associated with the presence of an expanded population of CD4 T cells lacking expression of CD28 (CD28 (null
Effects of GST null genotypes on individual susceptibility to leukemia: A meta-analysis.
Wang J, Wu D, Sun A. Wang J, et al. Exp Mol Pathol. 2019 Jun;108:137-142. doi: 10.1016/j.yexmp.2019.01.004. Epub 2019 Jan 17. Exp Mol Pathol. 2019. PMID: 30659796

BACKGROUND: Whether glutathione S-transferases (GST) null genotypes influence individual susceptibility to leukemia remains controversial. ...Significant associations with elevated individual susceptibility to leukemia were detected for GSTM1 (p < .0001, OR = 1.28, 95%C

BACKGROUND: Whether glutathione S-transferases (GST) null genotypes influence individual susceptibility to leukemia remains controver …
GST null polymorphisms may affect the risk of coronary artery disease: evidence from a meta-analysis.
Su H, Cao Y, Li J, Zhu Y, Ma X. Su H, et al. Thromb J. 2020 Sep 1;18:20. doi: 10.1186/s12959-020-00234-x. eCollection 2020. Thromb J. 2020. PMID: 32905149 Free PMC article.
BACKGROUND: Whether glutathione S-transferase (GST) null polymorphisms, namely GSTM1 null, GSTP1 null and GSTT1 null polymorphisms, influence the risk of coronary artery disease (CAD) or not remains unclear. ...CONCLUSIONS: This meta-analysis demonstra …
BACKGROUND: Whether glutathione S-transferase (GST) null polymorphisms, namely GSTM1 null, GSTP1 null and GSTT1 null
Making 'null effects' informative: statistical techniques and inferential frameworks.
Harms C, Lakens D. Harms C, et al. J Clin Transl Res. 2018 Jul 30;3(Suppl 2):382-393. eCollection 2018 Jul 30. J Clin Transl Res. 2018. PMID: 30873486 Free PMC article.
Being able to interpret 'null effects?is important for cumulative knowledge generation in science. To draw informative conclusions from null-effects, researchers need to move beyond the incorrect interpretation of a non-significant result in a null-hypothesis …
Being able to interpret 'null effects?is important for cumulative knowledge generation in science. To draw informative conclusions fr …
[FILAGGRIN GENE NULL-MUTATIONS AND ATOPIC DISEASES].
Pipinić IS, Macan J. Pipinić IS, et al. Acta Med Croatica. 2015;69(5):467-73. Acta Med Croatica. 2015. PMID: 29087092 Review. Croatian.
FLG null-mutations are present in up to 10% of the Caucasian population in Western Europe and North America, with R05X and 2282del4 as the most common null-mutations. ...A study conducted in Croatia found a low frequency of FLG null-mutations in general popul …
FLG null-mutations are present in up to 10% of the Caucasian population in Western Europe and North America, with R05X and 2282del4 a …
Interpreting null findings from trials of alcohol brief interventions.
Heather N. Heather N. Front Psychiatry. 2014 Jul 16;5:85. doi: 10.3389/fpsyt.2014.00085. eCollection 2014. Front Psychiatry. 2014. PMID: 25076917 Free PMC article. Review.
This article first explains why null findings are likely to occur under null hypothesis significance testing (NHST) due to the phenomenon known as "the dance of the p-values." ...From the standpoint of scientific progress, the chief problem about null finding …
This article first explains why null findings are likely to occur under null hypothesis significance testing (NHST) due to the …
Null results in TMS: from absence of evidence to evidence of absence.
de Graaf TA, Sack AT. de Graaf TA, et al. Neurosci Biobehav Rev. 2011 Jan;35(3):871-7. doi: 10.1016/j.neubiorev.2010.10.006. Epub 2010 Oct 16. Neurosci Biobehav Rev. 2011. PMID: 20955732 Review.
It is always difficult to interpret null results. But as a research method, transcranial magnetic stimulation (TMS) has so many degrees of freedom that null results are often dismissed as meaningless. ...In fact, without null results, neuroimaging as an enter …
It is always difficult to interpret null results. But as a research method, transcranial magnetic stimulation (TMS) has so many degre …
Robust Null Broadening Beamforming Based on Covariance Matrix Reconstruction via Virtual Interference Sources.
Yang J, Lu J, Liu X, Liao G. Yang J, et al. Sensors (Basel). 2020 Mar 27;20(7):1865. doi: 10.3390/s20071865. Sensors (Basel). 2020. PMID: 32230886 Free PMC article.
A novel null broadening beamforming method based on reconstruction of the interference-plus-noise covariance (INC) matrix is proposed, in order to broaden the null width and offset the motion of the interfering signals. ...Simulation results show that the proposed b …
A novel null broadening beamforming method based on reconstruction of the interference-plus-noise covariance (INC) matrix is proposed …
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