Table 1.

Demographic and cancer diagnosis data for cases and controls.

	Case, n (%)	Control, n (%)	p-value
Patients	11	22
Age at cancer diagnosis (years)
Mean (std. deviation)	50.64 (13.83)	52.09 (13.62)	0.77
Age at ICI initiation (years)
Mean (std. deviation)	52.91 (14.45)	54.45 (13.51)	0.77
Sex
Male	4 (36.4%)	8 (36.4%)	1.00
Female	7 (63.6%)	14 (63.6%)
Primary tumor
Cervical 1.00	Vadenocarcinoma	1 (9.1%)	2 (9.1%)
Lung	4 (36.4%)	8 (36.4%)
Breast	3 (27.3%)	6 (27.3%)
Head and neck squamous cell	1 (9.1%)	2 (9.1%)
RCC	1 (9.1%)	2 (9.1%)
Ovarian	1 (9.1%)	2 (9.1%)
Stage at ICI initiation
I/II	0	6 (27.27%)	0.077
III/IV	11 (100%)	16 (72.73%)

ICI, immune checkpoint inhibitor. CI, confidence interval.