. Author manuscript; available in PMC: 2016 Feb 24.

Published in final edited form as: Pain Med. 2015 Mar 20;16(7):1433–1442. doi: 10.1111/pme.12747

Table 2.

Pain severity, pain interference, and symptoms of depression as a function of fibromyalgia and smoking status

	FM+ Current Smoker (n = 213)	FM+ Nonsmoker (n = 338)	FM– Current Smoker (n = 251)	FM– Nonsmoker (n = 764)
Pain severity (range = 0–10)	7.44 ± 1.32	6.80 ± 1.62^*	6.65 ± 1.76^*	5.77 ± 1.92^*
Pain interference (range = 0–10)	8.32 ± 1.38	7.66 ± 1.84^*	6.95 ± 2.01^*	6.04 ± 2.32^*
Depression (% scoring 11 or above)	69.19%	52.10%^*	35.10%^*	22.19%^*

Note: Values are the unadjusted means, SD unless otherwise indicated. FM+ = meets ACR survey criteria for fibromyalgia; FM– = does not meet ACR survey criteria for fibromyalgia. Pain severity and pain interference were measured using the BPI. Symptoms of depression were assessed using the HADS. A score of 11 or higher on the HADS indicates a high probability that depression is present. Ns may vary due to missing data on the criterion variables.

indicates that the means or percentages were statistically significantly different from the FM+ smoker reference group at Bonferroni-adjusted P < 0.05 or less.