. 2017 Jul 21;3(3):00003-2017. doi: 10.1183/23120541.00003-2017

TABLE 2.

Treatment data agreement across registry dataset and LUCADA (Lung Cancer Data) for matched patients (n=26 001)

Registry dataset	LUCADA		Patients with the same date in two datasets	Patients with ±1 day in two datasets	Agreement	κ
Registry dataset	No	Yes	Patients with the same date in two datasets	Patients with ±1 day in two datasets	Agreement	κ
Surgery
No	21 631	243
Yes	713	3414	2961 (87%)	3301 (97%)	96%	0.86
Chemotherapy
No	16 958	268
Yes	1125	7650	6865 (90%)	6928 (91%)	95%	0.88
External-beam radiotherapy
No	17 214	1048
Yes	1370	6369	6002 (94%)	6073 (95%)	91%	0.77
Brachytherapy
No	25 951	16
Yes	23	11	10 (91%)	10 (91%)	99%	0.36