Fig. 1From: Background, design and conceptual model of the cluster randomized multiple-component workplace study: FRamed Intervention to Decrease Occupational Muscle pain - "FRIDOM"Time frame of feasibility and RCT study. Legend: The screening test on all 348 participants is numbered M0. The tests within the FRIDOM-feasibility study are numbered M1-M3 and the tests within the FRIDOM-RCT are numbered M4-M11Back to article page