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Table 4 The association between cyanobacteria concentration (maximum estimate based on five pixels) and the cases of gastrointestinal illnesses (sample size = 268); p represents the p-value

From: Acute health effects associated with satellite-determined cyanobacterial blooms in a drinking water source in Massachusetts

Lag (day) Category of cyanobacteria cellsa Regression coefficient 95% Confidence Interval P
0 1 Reference
2 0.54 −2.23 3.31 0.703
3 1.55 −1.45 4.55 0.312
1 1 Reference
2 −0.21 −3.01 2.59 0.883
3 −2.24 −5.27 0.80 0.149
2 1 Reference
2 −0.29 −3.04 2.46 0.837
3 −1.30 −4.27 1.67 0.392
3 1 Reference
2 −1.89 −4.68 0.90 0.185
3 −0.44 −3.46 2.57 0.774
4 1 Reference
2 −0.44 −3.23 2.34 0.755
3 −1.70 −4.73 1.33 0.271
5 1 Reference
2 −2.75 −5.63 0.13 0.062
3 −1.58 −4.71 1.56 0.324
  1. aCategory 1: <=10,000 cell/mL; Category 2: above 10,000 cell/mL but below or equal to 109,468 cell/mL; and Category 3: > 109,468 cell/mL