Module 2.1 - What The Evidence Supports

Unit 2 · The Evidence, And The Objections Open

Four claims hold up. They are not the same as "screening saves lives," and together they are enough to build a program on.

1. Screening finds students nobody knew about

This is SAFER's core claim and it is the best-evidenced one.

A study of school-based screening published in the American Journal of Public Health in 2009 compared students identified by a screen against the students school staff already knew were struggling. Except among the very highest-risk students, most of those the screen identified were not previously known to school professionals.

That finding is the whole argument for universal screening, and it is the one most often left out of the conversation.

Read it against what every school already has: a list of students who disclosed, who have a plan on file, whose parents called. Those students are known. Universal screening is about the others.

Source: Scott MA, Wilcox HC, Schonfeld IS, et al. School-based screening to identify at-risk students not already known to school professionals: the Columbia suicide screen. Am J Public Health. 2009;99(2):334-9.

2. The students identified were mostly not in care, and most of them accepted it when offered

A 2009 study in the Journal of the American Academy of Child and Adolescent Psychiatry followed what happened to students after a school-based screen. A large majority of the youth identified with elevated risk were not receiving any mental health care at the time of screening. Of those referred, roughly 70 percent went on to receive care.

Two things follow from that, and schools usually only hear the first.

The pessimistic reading: these students were not in care, which means the existing system had not reached them.

The useful reading: most of them took the referral. The common assumption that identified students will refuse help, or that families will block it, is not what the data shows.

Source: Gould MS, Marrocco FA, Hoagwood K, et al. Service Use by At-Risk Youths After School-Based Suicide Screening. J Am Acad Child Adolesc Psychiatry. 2009;48(12):1193-1201.

3. Screening increases mental health service use

Two randomized trials of screening in high schools, published in 2021 and 2022, found that screening increased the proportion of students who went on to use mental health services.

Randomized, in high schools, recent. This is the cleanest evidence in the Unit for the proposition that screening changes what happens to a student rather than only what a school knows.

Sources: Sekhar DL, Schaefer EW, Waxmonsky JG, et al. Screening in High Schools to Identify, Evaluate, and Lower Depression Among Adolescents: A Randomized Clinical Trial. JAMA Netw Open. 2021;4(11):e2131836. · Sekhar DL, Batra E, Schaefer EW, et al. Adolescent Suicide Risk Screening: A Secondary Analysis of the SHIELD Randomized Clinical Trial. J Pediatr. 2022;251:172-177.

4. Asking does not plant the idea

This is the strongest finding in the whole literature and it is not close. It has its own place in Module 2.3, because it arrives as an objection far more often than as a question.

Why early matters, which is a separate argument

The claims above are about screening. This one is about timing, and it is the reason a middle school is a reasonable place to start.

Most adult mental health conditions begin in adolescence. The large age-of-onset work in the National Comorbidity Survey Replication puts the median onset of anxiety and impulse-control disorders in childhood or early adolescence.

And young people wait years for treatment. Median delays between the onset of symptoms and first treatment contact run 6 to 8 years for mood disorders and 9 to 23 years for anxiety disorders.

School is where young people already are. A screen in a classroom on a Tuesday morning can compress a multi-year delay into the same afternoon.

Untreated adolescent depression also has consequences that are not clinical. Cohort studies link adolescent mental health conditions to later educational attainment, employment and social role outcomes. A school that treats this as somebody else's problem is treating its own outcomes as somebody else's problem.

Sources: Kessler RC, Berglund P, Demler O, et al. Lifetime prevalence and age-of-onset distributions of DSM-IV disorders in the National Comorbidity Survey Replication. Arch Gen Psychiatry. 2005;62(6):593-602. · Wang PS, Berglund P, Olfson M, et al. Arch Gen Psychiatry. 2005 [unverified – retrieval outstanding; this is the source of the treatment-delay figures and it is a different paper from Kessler]. · Patton GC, Coffey C, Romaniuk H, et al. The prognosis of common mental disorders in adolescents: a 14-year prospective cohort study. Lancet. 2014;383(9926):1404-11. · Dalsgaard S, McGrath J, Ostergaard SD, et al. JAMA Psychiatry. 2020;77(8):797-805.

Critical Reflection. Of the students your school is currently worried about, how did you find out about each one? Count how many told you themselves, and how many you found by accident. That ratio is the argument in this Module, measured in your own building.

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Module 2.2 – Why Students Do Not Ask For Help