Variable | Total | Event (%) | Total person-years | Incidence rate (/105 years) | IRR (95%CI) | p value | Log-rank p | Proportional hazards assumption |
---|---|---|---|---|---|---|---|---|
Before PSM (1:20 age, sex matching) | ||||||||
Scenario 1 | ||||||||
Non-Hashimoto’s thyroiditis | 309,065 | 218 (0.07) | 1,511,589 | 14.42 | Ref. | < 0.001 | 0.581 | |
Hashimoto’s thyroiditis | 15,685 | 70 (0.45) | 73,774 | 94.88 | 6.58 (5.03–8.61) | < 0.001 | ||
Scenario 2 | ||||||||
Non-Hashimoto’s thyroiditis | 309,065 | 214 (0.07) | 1,511,601 | 14.16 | Ref. | < 0.001 | 0.631 | |
Hashimoto’s thyroiditis | 15,686 | 70 (0.45) | 73,776 | 94.88 | 6.70 (5.12–8.78) | < 0.001 | ||
Scenario 3 | ||||||||
Non-Hashimoto’s thyroiditis | 309,075 | 168 (0.05) | 1,511,836 | 11.11 | Ref. | < 0.001 | 0.259 | |
Hashimoto’s thyroiditis | 15,691 | 61 (0.39) | 73,817 | 82.64 | 7.44 (5.55–9.97) | < 0.001 | ||
Scenario 4 | ||||||||
Non-Hashimoto’s thyroiditis | 307,441 | 195 (0.06) | 1,503,786 | 12.97 | Ref. | < 0.001 | 0.259 | |
Hashimoto’s thyroiditis | 15,147 | 52 (0.34) | 71,547 | 72.68 | 5.60 (4.13–7.61) | < 0.001 | ||
1:2 PSM | ||||||||
Scenario 1 | ||||||||
Non-Hashimoto’s thyroiditis | 30,524 | 35 (0.11) | 149,139 | 23.47 | Ref. | < 0.001 | 0.999 | |
Hashimoto’s thyroiditis | 15,454 | 61 (0.39) | 72,877 | 83.70 | 3.57 (2.35–5.40) | < 0.001 | ||
Scenario 2 | ||||||||
Non-Hashimoto’s thyroiditis | 30,524 | 33 (0.11) | 149,147 | 22.13 | Ref. | < 0.001 | 0.871 | |
Hashimoto’s thyroiditis | 15,454 | 61 (0.39) | 72,877 | 83.70 | 3.78 (2.48–5.78) | < 0.001 | ||
Scenario 3 | ||||||||
Non-Hashimoto’s thyroiditis | 30,524 | 18 (0.06) | 149,187 | 12.07 | Ref. | < 0.001 | 0.472 | |
Hashimoto’s thyroiditis | 15,457 | 53 (0.34) | 72,909 | 72.69 | 6.02 (3.53–10.28) | < 0.001 | ||
Scenario 4 | ||||||||
Non-Hashimoto’s thyroiditis | 30,004 | 25 (0.08) | 146,719 | 17.04 | Ref. | < 0.001 | 0.844 | |
Hashimoto’s thyroiditis | 15,129 | 52 (0.34) | 71,481 | 72.75 | 4.27 (2.65–6.88) | < 0.001 |