Table 4.
Effect Modification of Association between ILI and Ischemic stroke by demographic and sociodemographic characteristics
| Residential Geography | Sex | Race | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Urban | Rural | p-value for interaction | Men | Women | p-value for interaction | Black | White | p-value for interaction | |
| OR (95%CI) | OR (95%CI) | OR (95%CI) | OR (95%CI) | OR (95%CI) | OR (95%CI) | ||||
| 0–15 days before event | 1.38 (1.08, 1.78) | 1.43 (0.63, 3.22) | 0.98 | 1.57 (1.13, 2.18) | 1.22 (0.85, 1.72) | 0.82 | 1.40 (0.88, 2.24) | 1.43 (0.99, 2.04) | 0.79 |
| 0–30 days before event | 1.45 (1.21, 1.75) | 1.65 (1.05, 2.59) | 0.10* | 1.82 (1.43, 2.30) | 1.17 (0.91, 1.51) | 0.04* | 1.34 (0.95, 1.89) | 1.47 (1.15, 1.89) | 0.56 |
| 0–60 days before event | 1.48 (1.28, 1.70) | 1.51 (1.07, 2.12) | 0.93 | 1.65 (1.37, 1.98) | 1.33 (1.10, 1.60) | 0.11 | 1.36 (1.05, 1.76) | 1.49 (1.23, 1.80) | 0.64 |
| 0–90 days before event | 1.56 (1.38, 1.76) | 1.79 (1.33, 2.41) | 0.56 | 1.75 (1.49, 2.06) | 1.45 (1.23, 1.69) | 0.23 | 1.56 (1.25, 1.95) | 1.55 (1.31, 1.82) | 0.36 |
| 0–180 days before event | 1.69 (1.52, 1.87) | 1.63 (1.29, 2.07) | 0.87 | 1.87 (1.63, 2.14) | 1.53 (1.34, 1.74) | 0.08* | 1.71 (1.42, 2.05) | 1.52 (1.33, 1.74) | 0.50 |
| 0–365 days before event | 1.71 (1.57, 1.87) | 1.57 (1.29, 1.91) | 0.51 | 1.73 (1.54, 1.95) | 1.66 (1.49, 1.84) | 0.54 | 1.64 (1.41, 1.92) | 1.56 (1.401, 1.744) | 0.93 |
*Indicates Statistical Significance at p < 0.05