TABLE 2.

Health Related Quality of Life by Mining Group: Behavioral Risk Factor Surveillance System; Kentucky, Tennessee, Virginia, and West Virginia; 2006

	Mountaintop Coal Mining		Other Coal Mining		No Coal Mining
Variables	Unadjusted Mean (SE)	Adjusted Mean (SE)	Unadjusted Mean (SE)	Adjusted Mean (SE)	Unadjusted Mean (SE)	Adjusted Mean (SE)
Poor physical health (past 30 d)	7.76 (0.30)***	6.06 (0.28)***	5.99 (0.25)***	4.92 (0.23)	4.63 (0.10)	4.91 (0.10)
Poor mental health (past 30 d)	6.32 (0.27)***	5.12 (0.27)***	4.86 (0.23)***	4.21 (0.22)	3.80 (0.09)	4.00 (0.09)
Activity limitation (past 30 d)	5.34 (0.26)***	3.97 (0.25)**	3.73 (0.20)**	2.89 (0.19)*	2.95 (0.08)	3.18 (0.08)
Healthy Days Index	11.11 (0.34)***	9.08 (0.32)***	8.97 (0.30)***	7.79 (0.28)	7.08 (0.12)	7.42 (0.11)

Note. Nonmining counties served as the referent group. A Healthy Days Index was calculated by adding the number of poor physical and mental health days (unhealthy days) a respondent experienced during the past 30 days and subtracting that number from 30, with a logical maximum of 30 days.

*P < .05; **P < .01; ***P ≤ .001.