A comparison of standard and compositional data analysis in studies addressing group differences in sedentary behavior and physical activity

• Main Authors: Nidhi Gupta (Author), Svend Erik Mathiassen (Author), Glòria Mateu-Figueras (Author), Marina Heiden (Author), David M. Hallman (Author), Marie Birk Jørgensen (Author), Andreas Holtermann (Author)
• Format: Book
• Published: BMC, 2018-06-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.

Abstract Background Data on time spent in physical activity, sedentary behavior and sleep during a day is compositional in nature, i.e. they add up to a constant value. Compositional data have fundamentally different properties from unconstrained data in real space, and require other analytical proc...