Fig. 1From: Low back pain patterns over one year among 842 workers in the DPhacto study and predictors for chronicity based on repetitive measurementsFlow diagram of the study population. Both blue- and white-collar workers from 15 different companies were invited to participate in the DPhacto study. Only workers who completed the follow-up on low back pain over one year with a response rate of at least 85 % were included in the analyses of the current studyBack to article page