RT Journal Article SR Electronic T1 Relationship between age, workplace slips and the effectiveness of slip-resistant footwear among healthcare workers JF Injury Prevention JO Inj Prev FD BMJ Publishing Group Ltd SP 256 OP 258 DO 10.1136/injuryprev-2022-044533 VO 28 IS 3 A1 Gillian Frost A1 Mark Liddle A1 Sarah Cockayne A1 Rachel Cunningham-Burley A1 Caroline Fairhurst A1 David J Torgerson A1 , YR 2022 UL http://injuryprevention.bmj.com/content/28/3/256.abstract AB Objectives To explore any age-related trend in workplace slip rate and assess the effectiveness of appropriate slip-resistant footwear in preventing workplace slips by age.Methods Secondary data analysis of the Stopping Slips among Healthcare Workers trial, a two-arm randomised controlled trial conducted between March 2017 and May 2019. 4553 National Health Service (NHS) staff across seven sites in England were randomised 1:1 to the intervention group (provision of 5* GRIP-rated slip-resistant footwear) or the control group (usual work footwear). The primary outcome was self-reported workplace slips, ascertained primarily through weekly text messages throughout the 14-week trial follow-up and analysed using mixed-effects negative binomial regression. This paper reports a control group-only analysis of the association between age and slip rate, and a full intention-to-treat analysis of the effectiveness of slip-resistant footwear by age.Results The mean age of participants was 43 years (range 18–74). In the control group-only analysis, slip rate differed by age (p<0.001) with those aged 60+ having double the slip rate of those aged <30 years (95% CI 1.40 to 2.87). In the intention-to-treat analysis, the interaction between allocation and age was statistically significant (p=0.002). In addition, for all age groups except those aged <30 years, the slip rate in the intervention group was statistically significantly lower than the control group; the smallest incidence rate ratio (ie, the biggest effect) was 0.39 (95% CI 0.24 to 0.64) in the 60+ age group.Conclusion The provision of appropriate slip-resistant footwear was more effective at reducing workplace slips for older NHS staff.