Table 2.

Percentage of annotated messages matching the criteria, along with annotator agreement statistics for each question.

Code	Agreement, n (%)	Agreement (kappa)
Relevant to air quality, n=170	160 (94.1)	.869
Request for action, n=107	104 (97.2)	.557
Firsthand experience, n=107	87 (81.3)	.363
Reactive behavior, n=78	73 (93.6)	.864
Health concern, n=78	61 (78.2)	.429