Table 4

MRI indication, results and interpretation of findings

LikelyUnclearUnlikelyInter-rater agreement of initial independent assessments
Scan indicated4.9% (95% CI ±2.4%, n=15)9.8% (95% CI ±3.3%, n=30)85.0% (95% CI ±4.0%, n=261)Weighted kappa 0.23 (95% CI ±0.12),
78.6% (95% CI ±5.3%) observed agreement
Incidental findings present5.9% (95% CI ±2.6%, n=18) unremarkable findings87.3% (95% CI ±3.7%, n=267)3.3% (95% CI ±2.0%, n=10)3.6% (95% CI ±2.1%, n=11)Weighted kappa 0.70 (95% CI ±0.11),
90.7% (95% CI ±4.0%) observed agreement
Clinically relevant findings present8.2% (95% CI ±3.1%, n=25)42.9% (95% CI ±5.5%, n=131)43.1% (95% CI ±5.5%, n=132)Weighted kappa 0.23 (95% CI ±0.08),
44.2% (95% CI ±5.6%) observed agreement
Findings interpreted correctly by GP7.5% (95% CI ±3.0%, n=23) not discussed again16.7% (95% CI ±4.2%, n=51)7.2% (95% CI ±2.9%, n=22)68.6% (95% CI ±5.2%, n=210)Weighted kappa 0.84
(95% CI ±0.06),
90.2% (95% CI ±4.0%) observed agreement
  • GP, general practitioner.