Table 1.

Principal component analysis for 15-item physical environment evaluation of outpatient waiting areas

Physical environment of outpatient waiting areas	Component 1: Visual environment	Component 2: Hearing environment	Component 3: Body contact environment	Component 4: Cleanliness (overall and restrooms)
1. Lighting	0.636
2. Ground and landscape design	0.846
3. Furniture layouts	0.813
4. Color design	0.698
5. Space design	0.500
6. Noise level		0.592
7. Volume of paging		0.843
8. Volume of broadcast services		0.817
9. Air freshness			0.442
10. Temperature			0.475
11. Seating comfort			0.719
12. Seating sufficiency			0.815
13. Cleanliness				0.510
14. Air freshness of restrooms				0.860
15. Cleanliness of restrooms				0.861

Note: Rotation method: Varimax with Kaiser Normalization