Table 4. Distribution of Asbestos-Related Pleural Plaques in Thorax.

Locations of Pleural Plaques		P
Chest wall
Upper vs. lower	Upper (253, 90.7%) vs. lower (261, 93.6%)	0.003*
Upper	Ventral (217, 77.8%) vs. dorsal (209, 74.9%)	< 0.001*
Lower	Ventral (156, 55.9%) vs. dorsal (256, 91.8%)	< 0.001*
Ventral vs. dorsal	Ventral (247, 88.5%) vs. dorsal (270, 96.8%)	0.012*
Ventral side	Upper (217, 77.8%) vs. lower (156, 55.9%)	< 0.001*
Dorsal side	Upper (209, 74.9%) vs. lower (256, 91.8%)	0.021*
Diaphragm	Right (206, 73.8%) vs. left (155, 55.6%)	< 0.001*
Mediastinum	Right (49, 17.6%) vs. left (110, 39.4%)	< 0.001*

^*p < 0.05 was considered to indicate statistical significance.