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. Author manuscript; available in PMC: 2020 Apr 10.
Published in final edited form as: Head Neck. 2019 Nov 24;42(4):774–786. doi: 10.1002/hed.26036

TABLE 4.

Comparison of outcomes

SD PD ORR SD PD ORR
PD-L1+ 1% % effect 19.9 43.5 18.8 PD-L1+ 10% 11.3 52.2 18.9
N 499 474 747 251 251 294
95% CI 10.2–31.9 33.4–53.8 16.1–21.8 3.5–22.8 45.8–58.5 14.6–23.8
PD-L1− 1% % effect 20.4 52.8 8.8 PD-L1− 10% 22.3 54.3 8.8
N 81 81 193 88 81 242
95% CI 12.4–30.7 33.8–81.3 5.3–13.7 14.2–32.2 43.0–65.3 5.6–13.1
Comparison % Diff 0.5 9.3 10.0 Comparison 11 2.1 8.7
P value 0.9 0.1 0.0009a 0.01a 0.7 0.003a
PD-L1+ 5% % effect 9.5 47.8 20.9 PD-L1+ 25% 9 47.8 19.7
N 184 159 238 159 159 159
95% CI 5.7–14.7 39.9–55.8 15.9–26.6 5.0–14.5 39.9–55.8 13.8–26.6
PD-L1− 5% % effect 22.3 54.3 9.2 PD-L1− 25% 18.3 58.8 9
N 88 81 321 153 146 307
95% CI 14.2–32.2 43.0–65.3 5.9–13.7 7.9–31.7 50.5–66.8 6.1–12.8
Comparison % Diff 12.7 6.5 11.7 Comparison 9.3 11 10.7
P value 0.004a 0.34 0.004a 0.02a 0.05 0.001a
HPV+ % effect 17.8 47.4 21.2 HPV Comparison % Diff 1.3 2.8 6.2
N 95 95 193
95% CI 10.8–26.8 37.2–57.8 15.8–27.6
HPV− % effect 18.9 50 15 P value 0.8 0.6 0.06
N 290 290 411
95% CI 14.6–23.9 44.1–55.9 11.7–18.8
PD-L1+ 1% vs 5% % Diff 10.4 4.3 2.1 PD-L1+ 5% vs 10% 1.7 4.7 2
P value 0.001a 0.3 0.5 0.6 0.4 0.6
PD-L1+ 1% vs 10% % Diff 8.6 8.7 0.05 PD-L1+ 5% vs 25% 0.5 6.5 1.2
P value 0.003a 0.03a 1.0 0.9 0.3 0.8
PD-L1+ 1% vs 25% % Diff 10.9 4.4 0.9 PD-L1+ 10% vs 25% 0.8 4.4 0.8
P value 0.002a 0.3 0.8 0.8 0.4 0.8

Abbreviations: ORR, overall response rate; PD, progressive disease; SD, stable disease.

a

Significant difference.