Low Level Laser Therapy (LLLT) for Neck Pain: A Systematic Review and Meta-Regression.

Purpose: This systematic review update evaluated low level laser therapy (LLLT) for adults with neck pain.

Methods: Computerized searches (root up to Feb 2012) included pain, function/disability, quality of life (QoL) and global perceived effect (GPE). GRADE, effect-sizes, heterogeneity and meta-regression were assessed.