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Association between total lifting load during the workday and low-back pain intensity (absolute estimates) after work (A) and the following morning (B) in the fully adjusted model (NRS 0–10). c Statistically significant different from 0–499 kg (reference). d Statistically significant different from 500–1999 kg. e Tendency towards a statistically significant difference from 500–1999 kg (P=0.062).
