Table 3.

Results of linear regression model indicating independent predictors of the QOL.

Variables		Univariate regression				Multiple regression
		B	95%CI		p	B	95%CI		p
Age		0.081	−0.263	0.425	0.645
Number of complains		−3.684	−5.313	−2.055	<0.001 *	−0.46	−1.72	0.801	0.477
ADL		1.342	−0.845	3.529	0.233
IADL		1.449	0.268	2.631	0.018 *	0.207	−0.764	1.178	0.677
BDI		−1.436	−1.657	−1.215	<0.001 *	−1.328	−1.577	−1.08	<0.001 *
EDSS		−1.723	−3.304	−0.143	0.036 *	−0.887	−2.258	0.484	0.209
Sex	Female	ref.
	Male	2.845	−6.572	12.262	0.555
Education	Basic or vocational	ref.				ref.
	Secondary	1.766	−7.93	11.462	0.722
	Higher	10.707	0.786	20.628	0.037 *	2.559	−2.316	7.433	0.307
Place of residence	City	ref.
	Village	−4.795	−13.991	4.402	0.31
Marital status	Single	ref.				ref.
	Married	3.287	−4.813	11.387	0.429
	Widowed and divorced	11.72	−1.507	24.946	0.086	3.273	−4.326	10.872	0.401
Material status	< 1,000 PLN	ref.				ref.
	501–1,000 PLN	2.821	−6.198	11.84	0.542
	> 2000 PLN	10.457	1.317	19.597	0.028 *	0.048	−5.393	5.489	0.986
Disease duration	< 5 years	ref.
	5–10 years	−2.469	−12.318	7.38	0.625
	> 10 years	−3.476	−12.354	5.401	0.445

^*Statistically significant. ADL, Activities of Daily Living questionnaire; IADL, Instrumental Activities of Daily Living questionnaire; BDI, Beck Depression Inventory; QoL, quality of life.