Table 1.

Characteristics of Facebook posts classified by substance.

Substance type and post title		Date posted (2019)	Type	Target
Opioids
	Insurance and pregnancy are barriers to opioid treatment	June 1	Informational	Policy
	Opioids increasingly tied to deaths of pregnant women	May 14	Informational	Practice
	Embracing the needs of pregnant women and infants in our nation's battle against the opioid crisis	May 24	Informational	Perceptions
	Most physician health plans don't allow medical professionals access to the same treatment as patients	September 30	Experiential	Policy
	The dangerous stigma against pregnant women addicted to opioids	July 10	Experiential	Practice
	How the opioid epidemic affects women differently	June 13	Experiential	Perceptions
Cannabis
	Is cannabis safe during pregnancy? More expecting mothers are wondering	August 7	Informational	Policy
	Pregnant women in the US are giving up major vices—except one	May 15	Informational	Practice
	Marijuana use doubles in U.S. pregnant women, especially during first trimester	August 9	Informational	Perceptions
	More women are using marijuana during pregnancy, report says	June 11	Experiential	Policy
	Why some mothers keep using cannabis during pregnancy and breastfeeding	June 19	Experiential	Practice
	Good Chemistry, Worcester’s first marijuana dispensary, is open for recreational sales	May 5	Experiential	Perceptions
Alcohol
	Conversational approach most successful way of encouraging drinking habit disclosure	October 1	Informational	Policy
	Study tracks drinking habits of new parents	June 4	Informational	Practice
	Mixed messages about safe consumption during pregnancy	September 30	Informational	Perceptions
	Drinking during pregnancy: is a little alcohol ever okay?	June 6	Experiential	Policy
	Jenna Drennen: fighting back against ‘mommy wine culture’	June 29	Experiential	Practice
	Does pregnant Gretchen Rossi drink a little wine?	June 7	Experiential	Perceptions