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Table 2 Characterization of the investigative activities taken regarding syndromic alerts, serving as a process evaluation measure

From: Evaluation of the ability of standardized supports to improve public health response to syndromic surveillance for respiratory diseases in Canada

 

Total (n, alerts)

Intervention group (n, alerts)

Control group (n, alerts)

Alerts received by local public health agency study participants

1969

942

1027

 Year 1

801

409

392

 Year 2

1168

533

635

Alerts checked for data misclassification, data stream issues, or error-related issues

305 (15%)

224 (24%)

81 (8%)

 Year 1

193 (24%)

156 (38%)

37 (9%)

 Year 2

112 (10%)

68 (13%)

44 (7%)

Alerts checked for epidemiological clustering

1538 (78%)

664 (70%)

874 (85%)

 Year 1

635 (79%)

253 (62%)

382 (97%)

 Year 2

903 (77%)

411 (77%)

492 (77%)

Alerts warranting public health action

714 (36%)

165 (18%)

549 (53%)

 Year 1

319 (40%)

11 (3%)

308 (79%)

 Year 2

395 (34%)

154 (29%)

241 (38%)

 Missing

380 (19%)

168 (18%)

212 (21%)