Table 3.

Standardized path coefficient, standard error, unstandardized path coefficient of significant paths in final FMS symptoms cluster model (N = 120)

Path	Predictors	Dependent variables	β	SE	Unstandardized path coefficient
1	Widespread Pain index	Pain Intensity	.201	.036	5.550***
2	Symptom severity	Pain Interference	.258	.058	4.449***
3		Catastrophizing	.502	.169	2.978**
4		Depression	.470	.115	4.079***
5		Cognitive dysfunction	.311	.145	2.150*
6		Physical fatigue	.433	.128	3.381***
7		Mental fatigue	.546	.127	4.291***
8		Total fatigue	1.038	.270	3.848***
9	Catastrophizing	Pain Intensity	.164	.039	4.174***
10		Pain Interference	.146	.036	4.039***
11		Anxiety	.690	.088	7.861***
12		Depression	.422	.082	5.146***
13		Total fatigue	.311	.150	2.076*
14	Pain Intensity	Pain Interference	.665	.068	9.723***
15	Pain Interference	Physical fatigue	.485	.125	3.887***
16	Anxiety	Cognitive dysfunction	.268	.068	3.921***
17	Depression	Total fatigue	.337	.153	0.199*
18	Cognitive dysfunction	Mental fatigue	.589	.098	5.994***
19		Total fatigue	−.653	.222	−2.943**
20	Physical fatigue	Cognitive dysfunction	.303	.099	3.056**
21		Total fatigue	2.077	.171	12.174***
22	Mental fatigue	Total fatigue	1.619	.181	8.965***

^*p < 0.05,

^**p < 0.01,

^***p < 0.001;

β: Standardized path coefficient; WPI: Widespread Pain Index; SSS: Symptoms Severity Scores