Table 2.

Inter-rater reliability of pin-site infection assessment using the modified Gordon pin-site classification system (MGS).

	MGS score 0–4		Grouped MGS score (0–2 vs. 3, 4)		Color grouping (MGS grade 0 vs 2)
Inter-rater	Kappa	% agreement	kappa	% agreement	Kappa	% agreement
All raters	0.48 [0.45, 0.51]	63.1%	0.48 [0.45, 0.52]	88.7%	0.45 [0.42, 0.49]	64%
1 versus 2	0.52 [0.46, 0.57]	77.1%	0.39 [0.29, 0.49]	89.8%	0.49 [0.43, 0.55]	77.8%
3 versus 2	0.40 [0.35, 0.45]	68.9%	0.54 [0.44, 0.63]	91.6%	0.36 [0.30, 0.42]	70.4%
3 versus 1	0.53 [0.48, 0.59]	78.2%	0.58 [0.45, 0.71]	96.1%	0.50 [0.44, 0.56]	78.3%

MGS: modified Gordon score.