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. 2014 Oct;11(8):1218–1224. doi: 10.1513/AnnalsATS.201405-214OC

Figure 2.

Figure 2.

Associations of gastroesophageal reflux disorder (GERD) symptoms (range, 0–3; higher scores indicate more distress), sleep quality, and obstructive sleep apnea risk scores with Asthma Control Test (ACT) scores (range, 5–25; higher scores indicate better control). OSA = obstructive sleep apnea (range, 0–3; higher scores indicate higher risk); SQ = sleep quality (range, 0–21; higher scores indicate poorer quality); WHtR = waist-to-height ratio. Graphs show unadjusted associations of raw values of coexisting conditions with ACT scores. †Standardized as (raw value − mean)/SD and examined as a continuous variable in the regression model. ‡Each adjusted model included WHtR and the coexisting condition (OSA, GERD, or sleep quality), controlling for age, sex, race/ethnicity, education, income, smoking status, and BMI. P values in bold were statistically significant (<0.05).