Table 1.

Initial KMO measures.

KMO measure of sampling adequacy
	MSA
Overall	0.713
Item 2	0.780
Item 4	0.480
Item 6	0.769
Item 7	0.676
Item 8	0.700
Item 11	0.757
Item 14	0.680
Item 17	0.678
Item 20	0.728
Item 21	0.771
Item 24	0.731
Item 27	0.523
Item 28	0.718
Item 36	0.604
Item 37	0.754
Item 40	0.800
Item 41	0.742
Item 42	0.646
Item 44	0.781
Item 45	0.724
Item 47	0.617