Table 2.

Correlations within subsets of population

Parameter	CCNA1			CD1A			DCC			NDN
	Nc	rd	95% CI	Nc	rd	95% CI	Nc	rd	95% CI	Nc	rd	95% CI
Second Specimen Type
Biopsy	25	0.64	(0.33, 0.83)	27	0.63	(0.33, 0.81)	27	0.57	(0.24, 0.78)	26	0.77	(0.54, 0.89)
Surgery	61	0.64	(0.46, 0.77)	67	0.74	(0.61, 0.83)	69	0.75	(0.62, 0.84)	68	0.56	(0.37, 0.70)
HPV Status
HPV+	27	0.52	(0.17, 0.75)	29	0.45	(0.10, 0.70)	29	0.49	(0.15, 0.73)	28	0.57	(0.25, 0.78)
HPV−	59	0.52	(0.30, 0.68)	65	0.77	(0.65, 0.85)	67	0.60	(0.42, 0.73)	66	0.58	(0.39, 0.72)
Days between specimensa
0–44 days	43	0.71	(0.52, 0.83)	49	0.74	(0.58, 0.85)	49	0.64	(0.44, 0.78)	48	0.67	(0.48, 0.80)
>44 days	43	0.52	(0.26, 0.71)	45	0.68	(0.48, 0.81)	47	0.72	(0.55, 0.83)	46	0.65	(0.44, 0.79)
Smoking Status
Current	39	0.74	(0.55, 0.86)	44	0.67	(0.46, 0.81)	44	0.48	(0.21, 0.68)	44	0.59	(0.36, 0.75)
Former	33	0.58	(0.30, 0.77)	34	0.81	(0.65, 0.90)	36	0.79	(0.62, 0.88)	34	0.68	(0.44, 0.83)
Never	14	0.64	(0.17, 0.87)	16	0.49	(−0.01, 0.79)	16	0.84	(0.59, 0.94)	16	0.74	(0.39, 0.90)
Pack-yearsb
<20 pack-years	26	0.65	(0.35, 0.83)	27	0.78	(0.57, 0.89)	28	0.67	(0.40, 0.83)	28	0.59	(0.28, 0.79)
≥20 pack-years	45	0.60	(0.37, 0.76)	50	0.73	(0.57, 0.84)	51	0.66	(0.47, 0.79)	50	0.67	(0.48, 0.80)

^acutoff based on median.

^bcutoff based on Gillison, et al. paper⁽¹⁷⁾

^cNumber of patients

^dCorrelation Coefficient