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PBC Library

The NAU library website for the Phoenix Biomedical Campus Library

OT Resources

Levels of Evidence Pyramids

levels of evidence pyramid showing secondary and primary research

McMaster's 6S health resources pyramid

(Image: Clinical Information Access Portal)

Image result for levels of evidence pyramid

Alternative Levels of evidence pyramid.

(Image: Northcentral University)

Use the links below to find articles and guidelines that provide high-quality SUMMARIES of research.

SUMMARIES are secondary sources.

SUMMARIES are regularly updated guidelines that integrate evidence-based information about specific clinical problems.

Resource types that qualify as SUMMARIES include practice guidelines, clinical reviews, and position statements.

Use the links below to find articles that provide SYNTHESES or SYNOPSES of research.

SYNTHESES and SYNOPSES are secondary sources.

SYNTHESES and SYNOPSES gather and present evidence from high-quality studies surrounding a specific research question.

Resource types that qualify as SYNTHESES or SYNOPSIS include meta-analyses, systematic reviews, and certain randomized controlled trials, some with quality ratings based on study methodology.


Primary Original Research

Original research conducted to answer specific questions.

Study types: Case series, case reports, case control, cohort, randomized, controlled trials, qualitative studies, and more.

(Resources below also contain syntheses such as systematic reviews and meta-analyses.)

Finding background Information:


Other NAU resources

Search for additional condition-specific information in the Books and eBooks tabs above. 

Other online resources


  • Best used to cite background information on OT topics.
  • Hover over a title to read its contents.
  • The ebooks listed below are just a sample of NAU Libraries' ebook collection. Search below for additional titles.
  • Read additional OT ebooks through U of A Libraries (on-campus access only).

Physical books

  • Best used to cite background information on OT topics.  
  • Hover over a title to read its contents.
  • Check books out for 4 weeks with your PBC badge at the front desk.
  • The OT books below are just a sample of all of the OT books shelved in PBC Library.  Search for additional titles below.

Evaluate journals:

Streaming video

Image collections

  About the anatomical models


  • Available during staffed hours for in-library use only.

  • Some are stored on the shelf, while others are in a backroom; see library staff for assistance.
  • Check out models with library staff before and after use.  
  • Also view virtual models through Acland's Video Atlas of Human Anatomy 

Available models

Brain 4-part (4 copies)

Brain Ventricle (4 copies)

Ear Model (1 copy)

Ear, 3 times life-size, 6-part (4 copies)

Eye, 5 times full-size, 12-part (1 copy)

Eye, 5 times full-size, 6-part (3 copies)

Female Pelvis, 6-parts (1 copy)

Foot Skeleton (2 copies)

Foot Skeleton Model (2 copies)

Functional Larynx, 2.5 times full-size (2 copies)

Functional Shoulder Joint (4 copies)

Hand Skeleton Model (4 copies)

Heart model 5-part on base (3 copies)

Heart Model enlarged about 2 times (2 copies)

Knee Joint (1 copy)

Larynx, 2 times full-size (2 copies)

Life-size Auditory Ossicles (1 copy)

Liver with Gall Bladder (4 copies)

Median Section of the Head (4 copies)

Nose with Paranasal Sinuses (2 copies)

Rear Organs Upper Abdomen (4 copies)

Shoulder Joint (4 copies)

Sinus Model (1 copy)

Skull with Facial Muscles (4 copies)

Skull, 22 pieces with video (1 copy)

Spinal Cord with Nerve Endings (4 copies)

Spine with Femur Heads, Flexible (1 copy)

Torso-Dual Sex (1 copy)

Torso-Dual Sex, Female Sex Organs (1 copy)

Torso-Dual Sex, Male Sex Organs (1 copy)

Torso-Unisex, Open Neck and Back, 18-part (1 copy)

Tests, measures, and instruments

Learn about grants and non-profits

Search for grants:

Learn about grant opportunities for NAU graduate students:

Community Health Needs Assessments (CHNAs):

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