Just 40% wear some PPE when doing DIY activities (so, that's 6/10 that don't).
Considering 1 in 3 suffer an Injury or illness, the simple task putting on gloves, earplugs and safety glasses reduces greatly the risk to both the DIY and professional tradesman.
References
Unintentional (Accidental) Hospital-Treated Injury (Victoria, 2011)
Do-It-Yourself Jobs: Information for the Home Handyman
Do-It-Yourself Jobs: Information for Workplace Managers
2012 National DIY Safety Report by 3M Tekk Protection