Table 5.

Parallel analysis based on principal components analysis of the TMD.

Variable	Real-data eigenvalues	Mean eigenvalues	95 percentile of random eigenvalues	Cumulative proportion of variance
1*	9.220	1.306	1.360	41.91 %
2**	1.943	1.248	1.291	50.74 %
3***	1.590	1.206	1.239	57.96 %
4	1.078	1.173	1.198
5	0.989	1.144	1.166
6	0.844	1.120	1.139
7	0.734	1.094	1.115
8	0.647	1.070	1.089
9	0.588	1.048	1.066
10	0.536	1.026	1.044
11	0.510	1.004	1.023
12	0.455	0.984	1.004
13	0.409	0.964	0.980
14	0.389	0.943	0.962
15	0.376	0.921	0.939
16	0.336	0.900	0.918
17	0.287	0.877	0.897
18	0.280	0.855	0.876
19	0.234	0.831	0.853
20	0.224	0.803	0.826
21	0.181	0.768	0.798
22	0.153	0.719	0.761

Polychoric correlation matrices: 500. Promax rotation, Kappa value of 4. Number of components: 3.

^*Loss of control;

^**Financial problems;

^***Tolerance and withdrawal symptoms.