Table 3 Univariate Cox proportional hazard regression analysis of PET/CT parameters in predicting HT risk

SUV_baseline (median, range)

16.9 (2.12–29.72)

7.9 (0.7–46.6)

1.031–1.115

 Low-grade subgroup

9.64 (7.1–24.7)

7.7 (0.7–24.7)

1.033–1.449

 High-grade subgroup

19.3 (2.12–29.72)

8 (1.5–46.6)

1.009–1.103

SUV_interim (median, range)

2.49 (0–17.3)

3 (0–11.4)

0.955–1.298

 Low-grade subgroup

17.3 (17.3–17.3)

3.7 (0–11.4)

–

 High-grade subgroup

2.6 (0–14.5)

2.5 (0–10.7)

0.861–1.351

SUV_end (median, range)

7.3 (0–20.2)

2.5 (0–15.5)

1.023–1.323

 Low-grade subgroup

–

2.9 (0–15.5)

–

 High-grade subgroup

8.5 (0–20.2)

0.57 (0–8.8)

1.022–1.288

Deauville_interim

(1–3/4/5–6)

6/0/2

25/24/6

0.578–1.482

Deauville_end

(1–3/4/5–6)

2/1/3

44/16/10

0.829–2.054