Table 2.

Baseline characteristics

	n a	%
Age median (years)	62	63.5
Range	46–80
Male	62	53.2
Low education	60	40.0
Living alone	62	14.5
Paid work	58	17.2
Smoking	62	19.4
Co-morbidity	61	65.6
Co-medication	62	82.3
Number of drugs	51
Mean ± SD	5.0 ± 2.8
Range	1–13
Initial erlotinib dose 150 mg	60	98.3
Duration of use (days)	62
Mean ± SD	58.3 ± 39.4
Range	2–120b

SD standard deviation

^aNumber of patients with data available

^bMaximum observation period was 120 days