Table 5

Trends of ACS event risk by stratified follow-up years

Scrub typhus
NoYes
Follow-up yearsEventPYRate†EventPYRate†IRR (95% CI)Adjusted HR‡ (95% CI)
≤0.5 years1210 1541.181224914.824.08 (3.71 to 4.80)***3.34 (1.47 to 7.60)**
0.5–1 years896290.83823403.424.12 (3.72 to 4.55)***3.38 (1.24 to 9.25)*
>1 years18988 8782.136321 9102.881.35 (1.23 to 1.49)***1.15 (0.86 to 1.53)
  • *p<0.05, **p<0.01, ***p<0.001.

  • †Rate: incidence rate, per 1000 person-years.

  • ‡Adjusted HR: multivariable analysis including age, sex and comorbidities of hypertension, diabetes, hyperlipidaemia, CVA, COPD, CHF, asthma and CAD.

  • ACS, acute coronary syndrome; CAD, coronary artery disease; CHF, congestive heart failure; COPD, chronic obstructive pulmonary disease; CVA, cerebrovascular accident; IRR: incidence rate ratio; PY, person-years.