Table 2.

Examples of positive and negative tweets.

Type of tweet and modality		Positive sentiment	Negative sentiment	Neutral sentiment
Information on the procedure (positive) or fear of pain or harm (negative)
	Colonoscopy	Worried about preparing for a colonoscopy? Don’t. The preparation can be inconvenient, but it is not difficult or painful.	Getting a colonoscopy can cause the patient to explode (methane+oxygen+electrical spark).	Colonoscopies are not just simple, harmless tests. Here are the pros and cons to consider.
	Mammography	For women with dense breasts, ultrasound could help diagnose breast cancer.	I don’t think my breast have ever been so smashed and squeezed. And here I thought a mammogram would be like taking an X-ray--NOPE! Corsets = struggling to breathe while getting a constant mammogram.	Is This Why Mammogram Recommendations Have Changed?
	Pap smear	Getting a #Paptest is one of the best things you can do to prevent #cervicalcancer.	So my mom never had a pap smear until after she had me, when she was 37. I grew up hearing about how horrific it was. It really hurt her.	For me, a Pap Test just ended up being an unexpected trigger. For various reasons, some of which I will never know.
Benefits of cancer screening (positive) or “I’d rather” tweets (negative)
	Colonoscopy	LOVE your Parents enough to take them in for a Colonoscopy! It could just save their lives! Studies show that the colon cancer death rate was cut by more than half in those who had a colonoscopy. Has your dad turned 50 yet? If so, bug him into getting a colonoscopy. You could be saving his life.	Things I would rather do than my exams: re-organise a forever 21 store, eat my own vomit, peel 4,000 potatoes with a spork, colonoscopy prep I can think of a few better places: Gates of Hell, during a colonoscopy, Mordor, a Joel Osteen Conference...
	Mammography	Annual mammography in women 40 to 48 y of age reduced breast cancer mortality.	i’d rather have a mammogram done while being awake as they remove my kidney
	Pap smear	The only way to find changes that may lead cervical cancer is by having a Pap. Screening saves lives!	I would rather give myself a pap smear in the middle of Macy’s than read your Christmas newsletter, Aunt Karen
Call to Action (positive) or Other (negative)
	Colonoscopy	Have a friend turning 50? Encourage them to get their colonoscopy; it could save their life.	i would hate to get a colonoscopy… My first colonoscopy will be done by a coroner at my autopsy Today a colleague told me that he’s having a colonoscopy this week. I need a new job.
	Mammography	Ladies get that mammogram because it saved my little sister from a very aggressive breast cancer. Make it a XMas present to yourself.	How a mammogram actually causes breast cancer.
	Pap smear	I went for my first ever Pap Test today *feeling proud & brave*. Thanks to all the lesbian women who urged/reminded me to go! Hello ladies schedule your mammogram today. Include health in your new year’s resolution.	Your mothers so dumb she went to Dr. Dre for a pap smear