Table 2

Number of concordant and discordant interpretations for abnormal FVC (FVC<LLN) when using Canadian reference equation compared with GLI-Race or GLI-Other equation*

Ethnicity		GLI-Race		Total		GLI-Other		Total
Ethnicity		FVC≥LLN	FVC<LLN	Total		FVC≥LLN	FVC<LLN	Total
All	Canadian				Canadian
	FVC≥LLN	293 (72.2%)	1 (0.2%)	294	FVC≥LLN	294 (72.4%)	0 (0%)	294
	FVC<LLN	56 (13.8%)	56 (13.8%)	112	FVC<LLN	56 (13.8%)	56 (13.8%)	112
	Total	349	57	406	Total	350	56	406
Caucasian	Canadian				Canadian
	FVC≥LLN	186 (81.2%)	0 (0%)	186	FVC≥LLN	186 (81.2%)	0 (0%)	186
	FVC<LLN	14 (6.1%)	29 (12.7%)	43	FVC<LLN	24 (10.5%)	19 (8.3%)	43
	Total	200	29	229	Total	210	19	229
Black	Canadian				Canadian
	FVC≥LLN	7 (35.0%)	0 (0%)	7	FVC≥LLN	7 (35.0%)	0 (0%)	7
	FVC<LLN	10 (50.0%)	3 (15.0%)	13	FVC<LLN	5 (25.0%)	8 (40.0%)	13
	Total	17	3	20	Total	12	8	20
NE Asian	Canadian				Canadian
	FVC≥LLN	13 (61.9%)	1 (4.8%)	14	FVC≥LLN	14 (66.7%）	0 (0%)	14
	FVC<LLN	2 (9.5%)	5 (23.8%)	7	FVC<LLN	3 (14.3%）	4 (19.0%)	7
	Total	15	6	21	Total	17	4	21
SE Asian	Canadian				Canadian
	FVC≥LLN	66 (71.7%)	0 (0%)	66	FVC≥LLN	66 (71.7%)	0 (0%)	66
	FVC<LLN	20 (21.7%)	6 (6.5%)	26	FVC<LLN	14 (15.2%)	12 (13.0%)	26
	Total	86	6	92	Total	80	12	92
Other/Mixed	Canadian				Canadian
	FVC≥LLN	21 (47.7%)	0 (0%)	21	FVC≥LLN	21 (47.7%)	0 (0%)	21
	FVC<LLN	10 (22.7%)	13 (29.5%)	23	FVC<LLN	10 (22.7%)	13 (29.5%)	23
	Total	31	13	44	Total	31	13	44

*We analysed the data by classifying Asian participants as NE Asian (model 1) if they could not be classified clearly as either NE Asian or SE Asian.
FVC, forced vital capacity; GLI, Global Lung Function Initiative; LLN, lower limit of normal; NE, North East; SE, South East.