The value of serum Krebs von den lungen-6 as a diagnostic marker in connective tissue disease associated with interstitial lung disease

Table 5 The risk factors for CTD-ILD occurrence

Model	Variables	Risk Factor	Parameter	OR	95%CI of OR		p
Model	Variables	Risk Factor	Parameter	OR	Lower	Upper	p
Model 1 ^a			−1.24	–	–	–	–
	KL-6	Unit = 100	0.141	1.151	1.069	1.240	< 0.001
	LDH	Unit = 20	0.001	1.001	0.990	1.013	0.826
	IgG	Unit = 1	0.037	1.038	0.977	1.102	0.226
	Raynaud’s phenomenon	Yes VS. No	1.162	10.226	3.197	32.712	< 0.001
	Arthritis	Yes VS. No	−.317	0.531	0.234	1.207	0.131
	ANA	Yes VS. No	0.234	1.597	0.642	3.970	0.314
Model 2 ^b			−.315
	KL-6	Unit = 100	0.129	1.138	1.063	1.219	< 0.001
	Raynaud’s phenomenon	Yes VS. No	1.224	11.573	3.716	36.040	< 0.001

Note: ^aLogistic multivariate regression was included as an independent variable for the variable of p < 0.100 and KL-6 in Tables 3 and 4.; ^bLogistic multivariate regression using KL-6 and Raynaud’s phenomenon as independent variables

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