Table 4 Multivariable logistic regression models that account for repeated measures assessing the association between specified predictor variables and likelihood of taking a public health response to emergency department syndromic surveillance alerts by year within the study

Intervention

Year 1

0.024 (<0.01, 0.51)^a

0.43 (0.06, 2.92)

0.04 (0.001, 1.58)

2.94 (0.12, 72.2)

0.04 (<0.01, 0.37)^a

Year 2

0.20 (0.02, 2.38)

0.69 (0.16, 3.03)

0.19 (<0.01, 55.8)

0.98 (0.08, 12.4)

1.27 (0.19, 8.34)

Control

Reference

Reference

Reference

Reference

Reference

Medium LPHA

Year 1

0.83 (0.15, 45.9)

0.91 (0.06, 1.39)

4.25 (0.04, 423)

0.35 (0.01, 21.2)

3.66 (0.18, 74.0)

Year 2

0.29 (0.012, 7.12)

0.45 (0.06, 3.2)

11.7 (0.009, 15,000)

0.78 (0.04, 17.5)

1.18 (0.10, 13.9)

Large LPHA

Reference

Reference

Reference

Reference

Reference

Small LPHA

Year 1

0.352 (0.13, 9.30)

1.02 (0.12, 8.44)

1.28 (0.02, 69.2)

0.61 (0.02, 15.9)

3.83 (0.29, 50.5)

Year 2

1.65 (0.11, 24.0)

0.56 (0.11, 2.86)

32.1 (0.05, 19,908)

0.19 (0.01, 3.33)

1.62 (0.21, 12.6)

Large LPHA

Reference

Reference

Reference

Reference

Reference

Sustained alert

Year 1

1.81 (1.10, 2.99)^a

2.06 (1.23, 3.45)^a

0.62 (0.24, 1.56)

2.21 (1.27, 3.84)^a

7.83 (3.2, 19.2)^a

Year 2

0.24 (0.16, 0.35)^a

0.92 (0.61, 1.39)

0.15 (0.10, 0.23)^a

0.75 (0.47, 1.19)

0.59 (0.37, 0.94)^a

New alert

Reference

Reference

Reference

Reference

Reference