Table 3.
Hazard Ratios and 95% CIs for health outcomes and ENDS use.
| ENDS Never User N =94 689 | ENDS Former User N = 5082 | ENDS Current User N =1459 | |||
|---|---|---|---|---|---|
| Median Days of Follow-up = 713 | Median Days of Follow-up = 547 | Median Days of Follow-up = 504 | |||
| Total Person-Days = 67 027 753 | Total Person-Days = 3 194 136 | Total Person-Days = 866 614 | |||
| # of Events | # of Events | HRa (95% CI) | # of Events | HRa (95% CI) | |
| Influenza | 2663 | 171 | 0.99 (0.83, 1.17) | 44 | 0.96 (0.71, 1.31) |
| Pneumonia | 3435 | 150 | 1.07 (0.89, 1.28) | 40 | 1.02 (0.74, 1.40) |
| Heart attack | 786 | 21 | 0.88 (0.55, 1.41) | 9 | 1.30 (0.66, 2.55) |
| Stroke | 1079 | 35 | 1.23 (0.86, 1.80) | 13 | 1.65 (0.94, 2.89) |
| Any Cancerb | 1313 | 49 | 1.24 (0.90, 1.70) | 9 | 0.80 (0.41, 1.55) |
| Lung Cancerb | 91 | 9 | 2.05 (0.90, 4.67) | 1 | 1.00 (0.14, 7.42) |
| ER Visit | 22 749 | 1341 | 1.19 (1.12, 1.26) | 364 | 1.17 (1.05, 1.30) |
| Hospitalization | 8396 | 412 | 1.24 (1.11, 1.39) | 114 | 1.18 (0.98, 1.43) |
| Death | 805 | 31 | 1.35 (0.91, 2.02) | 12 | 1.84 (1.02, 3.32) |
aAdjusted for KP region, variables in Table 1, history of COPD, history of hyperlipidemia, and history of hypertension.
bExcludes 26 152 individuals with unavailable cancer data.