Table 2.

Experimental design. Each run indicates one batch of samples, which was processed in one day. In total, all 200 samples of the sample set were processed in six distinct runs.

n	cases				controls	total
	SCLC	SqLC	LCLC	AdCa
run 1	18				18	36
run 2		18			18	36
run 3			18		18	36
run 4				18	18	36
run 5	7	7			14	28
run 6			7	7	14	28
∑	25	25	25	25	100	200