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Table 3 Characterization of the types of responses initiated regarding 545 syndromic alerts, serving as an outcome 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)
Number of alerts 1,969 942 1,027
 Year 1 801 409 392
 Year 2 1,168 533 625
Any action 946 (48%) 382 (41%) 564 (55%)
 Year 1 397 (50%) 74 (18%) 323 (82%)
 Year 2 549 (47%) 308 (58%) 241 (38%)
Watchful waiting 647 (33%) 263 (28%) 384 (37%)
 Year 1 275 (34%) 18 (4%) 257 (66%)
 Year 2 372 (32%) 245 (46%) 127 (20%)
Internal notification 297 (15%) 146 (15%) 151 (15%)
 Year 1 109 (14%) 55 (13%) 54 (14%)
 Year2 188 (16%) 91 (17%) 97 (15%)
External notification 171 (9%) 84 (9%) 87 (8%)
 Year 1 66 (8%) 5 (1%) 61 (16%)
 Year 2 105 (9%) 79 (15%) 26 (4%)