Table 3.

OR and 95% CIs for the four comet variables by all cancers, skin cancer, and breast cancer

Cancer sites	Cases (%)	Controls (%)	OR (95% CI)
All cancers (n = 26)
CDM ≤ 23.7	16 (62)	13 (50)	1.0
CDM > 23.7	10 (38)	13 (50)	0.7 (0.2–1.9)
OTM ≤ 2.8	14 (54)	13 (50)	1.0
OTM > 2.8	12 (46)	13 (50)	0.9 (0.3–2.6)
Tail DNA ≤ 10.9	16 (62)	13 (50)	1.0
Tail DNA > 10.9	10 (38)	13 (50)	0.6 (0.2–2.0)
Tail length ≤ 37.8	15 (58)	13 (50)	1.0
Tail length > 37.8	11 (42)	13 (50)	0.8 (0.3–2.2)
Nonmelanoma skin cancers (n = 13)
CDM ≤ 23.7	7 (54)	7 (54)	1.0
CDM > 23.7	6 (46)	6 (46)	1.0 (0.3–4.0)
OTM ≤ 2.8	6 (46)	5 (38)	1.0
OTM > 2.8	7 (54)	8 (62)	0.7 (0.1–4.0)
Tail DNA ≤ 10.9	6 (46)	7 (54)	1.0
Tail DNA > 10.9	7 (54)	6 (46)	1.5 (0.3–9.0)
Tail length ≤ 37.8	7 (54)	7 (54)	1.0
Tail length > 37.8	6 (46)	6 (46)	1.0 (0.2–5.0)
Malignancies other than nonmelanoma skin cancer (n = 13)
CDM ≤ 23.7	9 (69)	6 (46)	1.0
CDM > 23.7	4 (31)	7 (54)	0.4 (0.08–2.1)
OTM ≤ 2.8	8 (62)	8 (62)	1.0
OTM > 2.8	5 (38)	5 (38)	1.0 (0.3. 4.0)
Tail DNA ≤ 10.9	10 (77)	6 (46)	1.0
Tail DNA > 10.9	3 (23)	7 (54)	0.2 (0.02–1.7)
Tail length ≤ 37.8	8 (62)	6 (46)	1.0
Tail length > 37.8	5 (38)	7 (54)	0.6 (0.1–2.5)
Breast cancers (n = 7)
CDM ≤ 23.7	5 (71)	3 (43)	1.0
CDM > 23.7	2 (29)	4 (57)	0.3 (0.04–3.2)
OTM ≤ 2.8	5 (71)	4 (57)	1.0
OTM >2.8	2 (29)	3 (43)	0.5 (0.05–5.5)
Tail DNA ≤ 10.9	6 (86)	3 (43)	1.0
Tail DNA > 10.9	1 (14)	4 (57)	*
Tail length ≤ 37.8	5 (71)	3 (43)	1.0
Tail length > 37.8	2 (29)	4 (57)	0.3 (0.04–3.2)

NOTE: ORs were calculated using the Comet values from the prediagnostic samples as “controls” and the postdiagnostic samples as “cases.” Comet variables were divided into two categories at the median of the control distribution.

^*Model would not converge because of single case in Tail DNA > 10.9 category.