Question: What screening is most common and has a W formation?
About the article "Volleyball", section "Team play".

Candidate passages:
One of the first meaningful decision points of a recruitment effort is the evaluation of skills, knowledge and abilities for a given job candidate.
The most common form of this evaluation is the screening of resumes. 
Professor Baum is also critical of the breast cancer screening program and believes women are not receiving accurate and complete information on the actual benefits and risks of the procedure.
This means most women are not giving informed consent for breast cancer screening.
In 2010 he gave a lecture at UCL entitled, "Breast cancer Screening: Some Inconvenient Truths".
In an article entitled "What are the drawbacks of breast screening?"
published in 2011, Michael Baum criticised the NHS Breast Screening Programme:Whatever the number, that one woman who benefits from a decade of screening has a life of infinite worth and if screening were as non‐toxic as wearing a seat belt there would be no case to answer.
However, there is a downside to screening, namely the problem of the over‐diagnosis of "pseudo‐cancers".
… (F)or every life saved ten healthy women will, as a consequence, become cancer patients and will be treated unnecessarily.
These women will have either a part of their breast or the whole breast removed, and they will often receive radiotherapy and sometimes chemotherapy. 
Screening program.
The program was developed by a team of researchers at Columbia University, led by David Shaffer.
The goal was to make researched and validated screening questionnaires available for voluntary identification of possible mental disorders and suicide risk in middle and high school students.
The questionnaire they developed is known as the Columbia Suicide Screen, which entered into use in 1999, an early version of what is now the Columbia Health Screen.
In 2003, the New Freedom Commission on Mental Health, created under the administration of George W. Bush, identified the TeenScreen program as a "model" program and recommended adolescent mental health screening become common practice.
The organization launched an initiative to provide voluntary mental health screening to all U.S. teens in 2003.
The following year, TeenScreen was included in the national Suicide Prevention Resource Center's (SPRC) list of evidence-based suicide prevention programs.
In 2007, it was included as an evidence-based program in the U.S. Substance Abuse and Mental Health Services Administration (SAMHSA)'s National Registry of Evidence-based Programs and Practices.
In 2009, the organization launched the TeenScreen Primary Care initiative to increase mental health screening by pediatricians and other primary care providers, the same year the U.S. Preventive Services Task Force recommended annual adolescent mental health screening as part of routine primary care, and the Institute of Medicine recommended expansion of prevention and early identification programs., the program was led by executive director Laurie Flynn, deputy executive director Leslie McGuire and scientific advisor Mark Olfson, M.D., alongside a National Advisory Council of healthcare professionals, educators and advocates.
As of November 15, 2012, TeenScreen has been terminated, will no longer train or register new programs, and will cease all operations by the end of the year. 
By screening, the intention is to diagnose a disease earlier than it would be without screening.
Without screening, the disease may be discovered later once symptoms appear.
Even if in both cases a person will die at the same time, because the disease was diagnosed early with screening, the survival time since diagnosis is longer with screening.
No additional life has been gained (and indeed, there may be added anxiety as the patient must live with knowledge of the disease for longer).
For example, most people with the genetic disorder Huntington's disease are diagnosed when symptoms appear around age 50, and they die around age 65.
The typical patient therefore lives about 15 years after diagnosis.
With a genetic test, it is possible to diagnose this disorder at birth.
If this newborn baby dies around age 65, he or she will have "survived" 65 years after diagnosis, without having actually lived any longer than the people who were diagnosed late in life.
Looking at raw statistics, screening will appear to increase survival time (this gain is called lead time).
If we do not think about what survival time actually means in this context, we might attribute success to a screening test that does nothing but advance diagnosis.
Lead time bias can affect interpretation of the five-year survival rate. 
Many screens are analyzed using the image analysis software that accompanies the instrument, providing a turn-key solution.
Third-party software alternatives are often used for particularly challenging screens or where a laboratory or facility has multiple instruments and wishes to standardize to a single analysis platform.
The most common open-source software for high-content screening is CellProfiler, produced by the Broad Institute.
Another option is HCS Analyzer, originally developed at the Institut Pasteur Korea.