Research Article

Lasting Effects of Workplace Strength Training for Neck/Shoulder/Arm Pain among Laboratory Technicians: Natural Experiment with 3-Year Follow-Up

Figure 4

Pain among participants with no or little pain (0–2) at baseline from the two companies. Prevention of pain development was more effective for the neck and wrist in the private compared with the public sector company during the natural experiment. *denotes a significant company by time interaction for neck ( ) and wrist pain ( ) during the natural experiment.
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