Review Article

Potential Risk Factors for the Onset of Complex Regional Pain Syndrome Type 1: A Systematic Literature Review

Table 9

Results summary showing factors examined and not found to be risk factors for the onset of CRPS 1 with weighting bias strength and quality and relevance.

Not a risk factor for CRPS onsetEvidence sourceWeighting bias strengthQuality and relevance of data extraction

Preoperative psychological distress or pain levelsPuchalski and Zyluk 2005 [34]WeakPoor
Diagnostic bone scanAllen et al. 1999 [42]WeakAdequate
Psychological behaviour: depressionHarden et al. 2003 [32]WeakAdequate