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Table 6 Correlation between Twitter positives and CDC cases

From: OMG U got flu? Analysis of shared health messages for bio-surveillance

Category Spearman’s Rhoa p-valueb
A 0.66 0.020
S 0.66 0.021
I 0.58 0.048
P 0.67 0.017
A+I+P 0.68 0.008
A+I+P+S 0.67 0.017
  1. Correlation between CDC AH1N1 laboratory data frequency for Influenza 2009-2010 and aggregated self protection behaviour counts and self reported diagnosis from Tweets. a Spearman’s rank-order correlation coefficient. b p values are reported for a two-tailed test. Calculations were done using VassarStats (http://faculty.vassar.edu/lowry/corr_rank.html)