Table 1:

Materials Review Scores for Common Health Literacy Measures Assessments calculated by authors using the defined parameters and resources below.

Materials Reviewed	Readability Score	PEMAT Score	CLAS Score	Source
JPS Hospital PowerPoint-Postpartum	6.7	38%-40%	Developing	John Peter Smith Hospital
Baylor Scott and White Hospital Postpartum Education	8.8	38%-20%	Not Present	Baylor Scott and White Hospital computer-generated postpartum education
Baylor Scott and White Hospital Health Custom Communications	7.2	81%-100%	Developing	A New Beginning Book: Dianne Moran, RN, LCCE, ICD and G. Byron Kallam, MD, FACOG
The Woman’s Hospital of Texas-Postpartum Discharge Guide	10.4	46%-60%	Not Present	Postpartum Discharge Guide https://womanshospital.com/dotAsset/4ce953d1-ec8f-4f3f-bcf8-2f88cfa3978d.pdf
Save Your Life: Get Care for these POST-BIRTH Warning Signs – Online	9.6	69% -50%	Developing	AWOHNN Postpartum Education Materials https://cdn.ymaws.com/www.awhonn.org/resource/resmgr/files/Post-Birth_Warning_signs_160.pdf
Preeclampsia Foundation – Online	11.0	71%-40%	Developing	Postpartum Preeclampsia https://www.preeclampsia.org/stillatrisk
World Health Organization Maternal Sepsis – Online	7.2	67%-20%	Not Present	Global Maternal and Neonatal Sepsis Initiative http://srhr.org/sepsis/wp-content/uploads/2017/08/WHO_Infographic-Maternal-sepsis-overview-EN-A4-WEB.pdf
Postpartum Hemorrhage widiHow by Carrie Noriega, MD Obstetrician & Gynecologist – Online	8.1	80%-80%	Not Present	How to Know if It’s Postpartum Bleeding or a Period https://www.wikihow.com/Know-if-It%27s-Postpartum-Bleeding-or-a-Period
NIH Mental Health Postpartum Depression – Online	9.8	64%-60%	Not Present	NIH Mental Health - Postpartum Depression Facts https://www.nimh.nih.gov/health/publications/postpartum-depression-facts/index.shtml
American Heart Association Peripartum Cardiomyopathy – Online	9.1	67%-20%	Not Present	AHA Peripartum Cardiomyopathy https://www.heart.org/en/health-topics/cardiomyopathy/what-is-cardiomyopathy-in-adults/peripartum-cardiomyopathy-ppcm
TCC AVS Instructions – Rural Clinic	6.7	14% - 43%	Not Present	Tyler Circle of Care computer-generated postpartum education.

¹⁴Readability Score: Documents were scored at https://readable.io/text/ and http://www.readabilityformulas.com/ by pasting full documents or portions of the more extensive education material. Satisfactory reading level was considered 5th grade or below.

¹³PEMAT Score: Documents were scored at https://www.ahrq.gov/professionals/prevention-chronic-care/improve/self-mgmt/pemat/pemat2.html. Good understandability and actionability was considered greater than 80%.

⁸CLAS Score: Documents were scored utilizing a developed rubric to state if the material had CLAS Standards present, developing, or not present.