Table 1.

Relative risk of malignant disease according to ANA pattern.

Positives IIF patients	Malignant neoplasm (n = 1,217)	No malignant disease (n = 13,934)	Relative risk	95% CI
Speckled (n = 1,333)	106 (8%)	1,227 (92%)	RR = 1.2	0.9 to 1.6
Homogeneous & speckled (n = 673)	34 (5%)	639 (95%)	RR = 0.7	0.5 to 0.9
Homogeneous (n = 536)	36 (7%)	500 (93%)	RR = 0.8	0.6 to 1.1
Nucleolar (n = 240)	25 (10%)	215 (90%)	RR = 1.5	1.03 to 2.3
Centromere (n = 100)	4 (4%)	96 (96%)	RR = 0.5	0.2 to 1.4
Other (n = 21)	0 (0%)	14 (100%)	NA	NA
Total (n = 2,903)	205	2,698

NA, not applicable.