Research Paper Volume 11, Issue 24 pp 12674—12684

Exposure to secondhand tobacco smoke is associated with reduced muscle strength in US adults

Figure 2. Mean differences (95%confidence intervals) in grip strength comparing the fourth to the first quartile of cotinine concentrations (ng/mL) by participant’s characteristics. Models are adjusted for age, sex, race/ethnicity, educational level, place of birth, tobacco smoke, alcohol consumption, diet quality, physical activity, BMI, cardiovascular disease, respiratory disease, musculoskeletal disease, cancer, hypertension, diabetes and number of drug treatments.