Table 5.

Hierarchical regression for exploring the correlates of MCS

Variables	Step 1		Step 2		Step 3		Step 4
	β	P	β	P	β	P	β	P
Gender	−0.065	0.257	−0.074	0.182	−0.036	0.451	−0.052	0.275
Age	−0.125	0.035	−0.086	0.137	−0.057	0.254	−0.076	0.130
Marital status	0.139	0.015	0.145	0.008	0.080	0.099	0.082	0.084
Residence	−0.024	0.686	−0.003	0.964	−0.019	0.699	−0.018	0.714
Anemia	0.095	0.097	0.042	0.449	0.039	0.430	0.045	0.353
EMS
Dummy_1	0.062	0.342	0.176	0.009	0.110	0.062	0.094	0.107
Dummy_2	−0.158	0.016	−0.016	0.818	−0.044	0.464	−0.046	0.440
DAS28-CRP			−0.308	< 0.001	−0.223	< 0.001	−0.218	< 0.001
Resilience					0.469	< 0.001	0.492	< 0.001
DAS28-CRP*Resilience							0.144	0.003
F	3.849		6.674		18.115		17.647
Adjusted R 2	0.063		0.133		0.342		0.359
ΔR 2			0.071		0.206		0.019

Gender, women versus men; Marital status, married/cohabited versus single/divorced/widowed/separated; Residence, rural versus urban; Anemia, no versus yes; Dummy_1, EMS ≤ 1 versus no; Dummy_2, EMS > 1 versus no. * Indicated multiplication. Abbreviations: MCS, mental component summary; EMS, early morning stiffness; DAS28-CRP, Disease Activity Score 28-C-reactive protein