. 2021 Jun 26;22:587. doi: 10.1186/s12891-021-04473-5

Table 5.

Inter-observer agreement regarding distal radial fractures comparing the three raters at the two classification seminars. As presented in Fig. 1, the AO/OTA group includes the 23A2 subgroups

	Inter-observer agreement
AO/OTA group, including A2 subgroup (4–5 signs)	0.34 (0.24–0.44)	0.48 (0.38–0.58)	0.22 (0.14–0.31)	0.29 (0.20–0.37)	0.28 (0.20–0.37)	0.35 (0.26–0.44)
AO/OTA type (3 signs)	0.48 (0.36–0.60)	0.76 (0.66–0.87)	0.51 (0.39–0.63)	0.69 (0.58–0.80)	0.62 (0.51–0.73)	0.71 (0.61–0.82)

Inter-observer agreement

Rater 1 vs Rater 2

Rater 1 vs Rater 3

Rater 2 vs Rater 3

Seminar 1
Kappa
(95% CI)

Seminar 2
Kappa
(95% CI)

Seminar 1
Kappa
(95% CI)

Seminar 2
Kappa
(95% CI)

Seminar 1
Kappa
(95% CI)

Seminar 2
Kappa
(95% CI)

AO/OTA group, including A2 subgroup

(4–5 signs)

0.34

(0.24–0.44)

0.48

(0.38–0.58)

0.22

(0.14–0.31)

0.29

(0.20–0.37)

0.28

(0.20–0.37)

0.35

(0.26–0.44)

AO/OTA type

(3 signs)

0.48

(0.36–0.60)

0.76

(0.66–0.87)

0.51

(0.39–0.63)

0.69

(0.58–0.80)

0.62

(0.51–0.73)

0.71

(0.61–0.82)