Table 4

Morbidity prevalence according to clinical variables

		Degrees of		Crude
Prognostic factors	Number	morbidity	%	OR	95% CI
Onset–diagnosis interval (y)
>5	35	9	25
5	37	19	50	3.05	1.00, 9.45
Age (y)
<60	51	19	37
60	21	9	43	0.79	0.25, 2.54
Sex
Male	7	1	14
Female	65	27	41	4.26	0.47, 203.2
Diffuse skin involvement
Absent	56	13	23
Present	16	15	94	46.57	6.13, 2.134
FVC < 70%
Absent	64	21	33
Present	7	7	100	^*	2.60
Interstitial pattern
Absent	46	13	28
Present	25	15	60	3.81	1.21, 12.29
PHT
Absent	64	20	31
Present	8	8	100	^*	3.28
PHT (detected by Doppler)
Absent	61	19	31
Present	8	7	87	15.47	1.72, 713
Pericardial effusion
Absent	54	16	30
Present	15	10	66	4.75	1.21, 20.23
Antitopoisomerase I
Absent	56	15	26
Present	8	7	87	19.13	2.07, 882.53
ACA
Absent	39	19	49
Present	29	6	20	0.27	0.08, 0.93
Homogeneous IFI pattern
Absent	57	18	31
Present	15	10	66	4.24	1.12, 18.26
Active capillaroscopic
Absent	46	8	18
Present	17	12	70	10.82	2.68, 51.64

p Value, Mantel-Haenszel summary χ² test. ^*, Uncalculable because of the absence of effectives in any cell. Abbreviations as shown in tables 2 and 3.