Table 1.

Comparing #asthma and asthma datasets

	#Asthma	Asthma	P Value
Monthly totals
Tweets	14,276 (13,134–15,703)	148,021 (132,172–168,778)	<0.0001
Users	6,570 (5,949–7,158)	95,013 (88,416–112,719)	<0.0001
Impressions	70.7 million (61.5–87.7 million)	718.2 million (616.8–848.2 million)	<0.0001
Characteristics of tweets
Percentage of tweets with links	71% (67–76%)	39% (36–44%)	<0.0001
Percentage of tweets with mentions	59% (53–66%)	55% (51–66%)	0.39
Percentage of tweets with visual media	37% (24–49%)	18% (15–24%)	<0.0001
Percentage of tweets with replies	1% (1–2%)	8% (7–9%)	<0.0001
Percentage of retweets	47% (41–53%)	43% (39–51%)	0.57
Percentage of tweets with positive sentiment	60% (56–63%)	52% (49–55%)	<0.0001

Data are presented as median (interquartile range).