Regional variability in use of a novel assessment of thoracolumbar spine fractures: United States versus international surgeons

Table 4 US versus non-US intra-rater agreement

	Percent Agreement	Cohen's Kappa	Weighted Kappa	Spearman's Rank Order
	Mechanism
USA	62.2*	0.454	0.465	0.561
Non-USA	56.0	0.398	0.519	0.605
	Neurological Status
USA	87.6	0.781	0.803	0.825
Non-USA	96.2*	0.933	0.956	0.982*
	PLC Integrity
USA	67.4	0.455	0.519	0.578
Non-USA	69.7	0.507	0.610	0.685*
	Total TLISS
USA	43.3	0.354	0.588	0.726
Non-USA	41.4	0.342	0.658	0.825*
	Management
USA	78.8	0.617	0.582	0.604
Non-USA	77.6	0.610	0.577	0.609

Intra-Rater agreement within USA and non-USA surgeons.
*p < 0.05 for difference between USA and non-USA surgeons. For significance tests, all unweighted coefficients were converted into Fisher's z-scores, and the difference in z-scores was divided by standard error.
A level was set at 0.05 (ΔZ/SE ≥ 1.96).

ISSN: 1749-7922