Distribution of infection grades by HT score. (A) Distribution of infection grades and infection type in patients with a low HT score. (B) Distribution of infection grades and infection type in patients with a high HT score. (C) Infection severity according to a low and high HT score. Low-grade infection represents infection grades 1 to 2. Severe infection is defined as an infection grade ≥3. Upper P value describes the difference between HT^high and HT^low patients in the incidence of infection grade ≥3, and lower P value in the incidence of infection grade ≥2.