Table 1.

Tweet count by user clusters.

User cluster	Stage	Number of nonthematic tweets	Total number of tweets included for modeling	Nonthematic tweet ratio
The conservative cluster	1	1041	3094	0.34
The general cluster	1	11,304	31,364	0.36
The progressive cluster	1	1210	4377	0.28
The public health cluster	1	764	1414	0.54
The conservative cluster	2	1565	4711	0.33
The general cluster	2	20,057	43,281	0.46
The progressive cluster	2	3475	10,462	0.33
The public health cluster	2	0	2300	0
The conservative cluster	3	129	430	0.30
The general cluster	3	5309	12,077	0.44
The progressive cluster	3	1120	3539	0.32
The public health cluster	3	0	983	0