Prevalence of neck and low back pain in community-dwelling adults in Spain: an updated population-based national study (2009/10–2011/12)

Purpose To estimate time trends in the prevalence of neck (NP) and low back pain (LBP) from 2009 to 2012; and to determine the socio-demographic features, self-rated health status, co-morbidity, lifestyle-related habits, and health care service associated with NP and LBP in Spanish adults.