Table 3.

Associations of antinuclear antibodies (ANA) with categorical variables. All data are percentages. Percentages of patients within each class of ANA who have certain characteristics are given with the probability value from Fisher’s exact test that these are the same percentages in the patients without each particular ANA. Comparisons significant at the 0.05 level are in bold type.

Criteria	ACA	Not ACA	p	Anti-topo I	Not Anti-topo I	p	Anti-RNP	Not Anti-RNP	p	Anti-Th/To	Not Anti-Th/To	p
Telangiectasia	63	42	< 0.01	56	53	0.8	7	57	< 0.01	64	52	0.4
Calcinosis	24	15	0.13	31	18	0.3	0	21	0.05	21	19	0.7
Arthritis	29	41	0.12	31	35	1.0	40	34	0.8	50	33	0.2
Esophageal involvement	52	41	0.14	50	46	0.8	13	49	0.01	43	46	1.0
Pulmonary fibrosis	7	17	0.04	38	9	< 0.01	7	12	1.0	21	11	0.2
FVC/DLCO > 1.4	61	45	0.05	56	53	0.8	42	54	0.6	54	53	1.0
Pulmonary artery pressure > 30 mm Hg	9	6	0.6	0	8	0.6	0	8	0.6	8	7	1.0

ACA: anticentromere antibodies; FVC: forced vital capacity; DLCO: diffusing lung capacity for carbon monoxide.