A recent systematic review suggested that physical therapy is effective, but there is only moderate evidence to support this conclusion.

A 1998 systematic review of studies assessing its prevalence in 13 countries concluded that about 31 % of cancer patients use some form of complementary and alternative medicine .< ref name = Ernst_Cassileth > Alternative medicine varies from country to country.

A systematic 2003 review of controlled clinical trials related to the Alexander Technique found two reputable studies suggesting the Alexander Technique is effective in reducing the disability of patients suffering from Parkinson ’ s disease and improving pain behaviour and disability in patients with back pain, and concluded that the evidence supporting the effectiveness of the Alexander Technique is encouraging but not convincing.

A systematic review of randomized controlled trials published in the Archives of General Psychiatry showed up to one-third of the six-week effect of SSRI treatment can be seen in the first week.

Nevertheless, a 2009 systematic review and meta-analysis of trials in people diagnosed with schizophrenia found that less than half ( 41 %) showed any therapeutic response to an antipsychotic, compared to 24 % on placebo, and that there was a decline in treatment response over time, and possibly a bias in which trial results were published.

A systematic review by the Cochrane Collaboration found no studies of sufficient quality to make any statement on the efficacy of the vaccine.

Guidelines issued by the UK-based National Institute for Health and Clinical Excellence ( NICE ), carried out a systematic review using different methodology and came to a different conclusion.

However, controversy exists as to tolerance to the anxiolytic effects with some evidence that benzodiazepines retain efficacy and opposing evidence from a systematic review of the literature that tolerance frequently occurs and some evidence that anxiety may worsen with long-term use.

A systematic review of CBT in depression and anxiety disorders concluded that " CBT delivered in primary care, especially including computer-or Internet-based self-help programs, is potentially more effective than usual care and could be delivered effectively by primary care therapists.

A systematic review found that the risk of death from manipulations to the neck outweighs the benefits.

“ Health effects of Relocation following disasters: a systematic review of literature ”.

Using techniques from science, engineering and statistics, such as the systematic review of medical literature, meta-analysis, risk-benefit analysis, and randomized controlled trials ( RCTs ), EBM aims for the ideal that healthcare professionals should make " conscientious, explicit, and judicious use of current best evidence " in their everyday practice.

A 2001 review of 160 Cochrane systematic reviews ( excluding complementary treatments ) in the 1998 database revealed that, according to two readers, 41. 3 % concluded positive or possibly positive effect, 20 % concluded evidence of no effect, 8. 1 % concluded net harmful effects, and 21. 3 % of the reviews concluded insufficient evidence.

The second area is the systematic review of medical literature to evaluate the best studies on specific topics.

For example, the strongest evidence for therapeutic interventions is provided by systematic review of randomized, triple-blind, placebo-controlled trials with allocation concealment and complete follow-up involving a homogeneous patient population and medical condition.

It concludes from a systematic review of available research that,

*" A systematic review has found that hypnosis enhances the effects of cognitive behavioural therapy for conditions such as phobia, obesity, and anxiety.

According to a systematic review by the Cochrane Collaboration, the best evidence in the treatment of LEMS exists for 3, 4-aminopyridine and IVIG.

A systematic review of the literature related to PID treatment was performed prior to the 2006 CDC sexually transmitted infections treatment guidelines.

Consequently, a systematic review by the Cochrane Collaboration ( published in 2008 ) found insufficient evidence to recommend the use of silver-treated dressings to treat infected wounds.

A systematic review by the Cochrane Collaboration found no studies of sufficient quality to make any statement on the efficacy of the vaccine.

In a systematic review including two prospective studies of 47, XYY boys identified by newborn screening programs and one retrospective study of 47, XYY men identified by screening men over 184 cm ( 6 ' 0 ") in height, forty-two 47, XYY boys and men had an average 99. 5 verbal IQ and 106. 4 performance IQ .< ref name =" Ratcliffe 1994 ">

In a recent systematic review of eight trials of day care for disadvantaged children under 5 years of age, long term follow up showed lower pregnancy rates among adolescents.

" In 2003, The UK ECT Review group published a systematic review and meta-analysis comparing ECT to placebo and antidepressant drugs.

With Robert Morison ’ s 1672 Plantarum umbelilliferarum distribution nova it became the first group of plants for which a systematic study was published.

For diatomic molecules, a systematic study using a minimum basis set and the first calculation with a larger basis set were published by Ransil and Nesbet respectively in 1960.

In 1840, Gauss published his influential Dioptrische Untersuchungen, in which he gave the first systematic analysis on the formation of images under a paraxial approximation ( Gaussian optics ).

Written by Mather, it was the first systematic book on science published in America.

Perhaps the first elaborate and systematic exposition was by John Venn, in The Logic of Chance: An Essay on the Foundations and Province of the Theory of Probability ( published editions in 1866, 1876, 1888 ).

His book about games of chance, Liber de ludo aleae (" Book on Games of Chance "), written in 1526, but not published until 1663, contains the first systematic treatment of probability, as well as a section on effective cheating methods.

The first explicit and systematic summary of the materialist interpretation of history published, Anti-Dühring, was written by Friedrich Engels.

The first ever systematic description of global disability arising in youth, published in 2011, found that among 10 to 24 year olds nearly half of all disability ( current and as estimated to continue ) was due to mental and neurological conditions, including substance use disorders and conditions involving self-harm.

In 1958, he published a book entitled Regular Division of the Plane, with reproductions of a series of woodcuts based on tessellations of the plane, in which he described the systematic buildup of mathematical designs in his artworks.

The pontificate of Pius XII was the first in Vatican history, which published papal speeches and addresses in vernacular language on a systematic basis.

Nonetheless, Albert Demangeon paved the way for a number of more systematic conceptualizations of the field with his ( posthumously published ) notion that social groups ought to be within the center of human geographical analysis.

With Bennington, Derrida undertook the challenge published as Jacques Derrida, an arrangement in which Bennington attempted to provide a systematic explication of Derrida's work ( called the " Derridabase ") using the top two-thirds of every page, while Derrida was given the finished copy of every Bennington chapter and the bottom third of every page in which to show how deconstruction exceeded Bennington's account ( this was called the " Circumfession ").

In March 2006 the Falun Gong-affiliated Epoch Times published a number of articles alleging that the China was conducting widespread and systematic organ harvesting of living Falun Gong practitioners.

In July 2006, they published " Report into Allegations of Organ Harvesting of Falun Gong Practitioners in China ", which concluded that large numbers of Falun Gong practitioners were victims of systematic organ harvesting throughout China, while still alive ..

Jonathan Swift's Gulliver's Travels, published seven years after Robinson Crusoe, may be read as a systematic rebuttal of Defoe's optimistic account of human capability.

A systematic review in 2007 of the published English-language literature assessed the quality and strength of articles addressing causes for carpal tunnel syndrome.

The oldest systematic record of the plants was in 1692, when Van Rheede tot Drakenstein published descriptions of two plants.

In 1979 the IUPAC published recommendations according to which the element was to be called ununoctium, a systematic element name, as a placeholder until the discovery of the element is confirmed and the IUPAC decides on a name.

In 1979 IUPAC published recommendations according to which the element was to be called ununseptium ( with the corresponding symbol of Uus ), a systematic element name as a placeholder, until the discovery of the element is confirmed and a name is decided on.

In 2012, the Cochrane Library published a systematic review of scientific studies.