Table 2. Survival analysis according to CIP2A immunoreactivity in subgroups of tongue cancer.

	Low CIP2A expression		High CIP2A expression
Characteristic	5-year survival	95% CI	5-year survival	95% CI	P-valuea
Age, years
<60	84.2	67.8–100.1	58.8	35.4–82.2	0.042
⩾60	65.0	44.1–85.9	60.0	35.2–84.8	0.347
Tumour size, mm
pT1 (⩽20)	76.7	61.5–91.8	66.7	47.8–85.5	0.124
pT2 (21–40)	66.7	35.9–97.5	28.6	0–62.0	0.018

Abbreviations: CIP2A=cancerous inhibitor of PP2A; CI=confidence interval.

^aLogrank test.