Table 1

Prevalence, probability of agreement, Conger’s kappa (SE) and 95% CI for the seven groups of observers when classifying 120 sound files for the presence of crackles and wheezes

	Prevalence	P (agree)	Kappa	SE (kappa)	95% CI
Crackles
Experts	0.21	0.86	0.56	0.080	0.40 to 0.72
GP Norway	0.23	0.85	0.58	0.083	0.42 to 0.74
GP Russia	0.31	0.65	0.20	0.051	0.10 to 0.30
GP UK	0.17	0.87	0.53	0.089	0.36 to 0.70
GP Netherlands	0.17	0.86	0.49	0.105	0.28 to 0.70
Students	0.27	0.76	0.40	0.086	0.23 to 0.57
Pulmonologists	0.29	0.74	0.37	0.082	0.21 to 0.53
Wheezes
Experts	0.079	0.96	0.75	0.125	0.51 to 1
GP Norway	0.083	0.94	0.62	0.163	0.30 to 0.94
GP Russia	0.22	0.69	0.09	0.076	−0.06 to 0.24
GP UK	0.065	0.99	0.97	0.024	0.92 to 1.00
GP Netherlands	0.050	0.94	0.39	0.087	0.22 to 0.56
Students	0.073	0.95	0.66	0.042	0.58 to 0.74
Pulmonologists	0.14	0.82	0.27	0.102	0.07 to 0.47

GP, general practitioner.