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Table 2 Three Functional Linear Models

From: Measuring the impact of apnea and obesity on circadian activity patterns using functional linear modeling of actigraphy data

Model 1 apnea Main Effect Only Activity k (t) = β 0(t) + β AHI (t) × AHIk + ε k (t)
Model 2 BMI Main Effect Only Activity k (t) = β 0(t) + β BMI (t) × BMIk + ε k (t)
Model 3 apnea+BMI+interaction Activity k (t) = β 0(t) + β AHI (t) × AHIk + β BMI (t) × BMIk +β AHI × BMI (t) × AHIk × BMI k + ε k (t)