Table 3

Number of concordant and discordant interpretations for abnormal FEV₁ (FEV₁<LLN) when using Canadian reference equation compared with GLI-Race or GLI-Other equation*

Ethnicity		GLI-Race		Total		GLI-Other		Total
Ethnicity		FEV₁≥LLN	FEV₁<LLN	Total		FEV₁≥LLN	FEV₁<LLN	Total
All	Canadian				Canadian
	FEV₁≥LLN	285 (70.2%)	1 (0.2%)	286	FEV₁≥LLN	286 (70.4%)	0 (0%)	286
	FEV₁<LLN	49 (12.1%)	71 (17.5%)	120	FEV₁<LLN	59 (14.5%)	61 (15.0%)	120
	Total	334	72	406	Total	345	61	406
Caucasian	Canadian				Canadian
	FEV₁≥LLN	178 (77.7%)	0 (0%)	178	FEV₁≥LLN	178 (77.7%)	0 (0%)	178
	FEV₁<LLN	14 (6.1%)	37 (16.2%)	51	FEV₁<LLN	29 (12.7%)	22 (9.6%)	51
	Total	192	37	229	Total	207	22	229
Black	Canadian				Canadian
	FEV₁≥LLN	8 (40.0%)	0 (0%)	8	FEV₁≥LLN	8 (40.0%)	0 (0%)	8
	FEV₁<LLN	10 (50.0%)	2 (10.0%)	12	FEV₁<LLN	5 (25.0%)	7 (35.0%)	12
	Total	18	2	20	Total	13	7	20
NE Asian	Canadian				Canadian
	FEV₁≥LLN	12 (57.1%)	1 (4.8%)	13	FEV₁≥LLN	13 (61.9%)	0 (0%)	13
	FEV₁<LLN	1 (4.8%)	7 (33.3%)	8	FEV₁<LLN	5 (23.8%)	3 (14.3%)	8
	Total	13	8	21	Total	18	3	21
SE Asian	Canadian				Canadian
	FEV₁≥LLN	62 (67.4%)	0 (0%)	62	FEV₁≥LLN	62 (67.4%)	0 (0%)	62
	FEV₁<LLN	16 (17.4%)	14 (15.2%)	30	FEV₁<LLN	12 (13.0%)	18 (19.6%)	30
	Total	78	14	92	Total	74	18	92
Other/Mixed	Canadian				Canadian
	FEV₁≥LLN	25 (56.8%)	0 (0%)	25	FEV₁≥LLN	25 (56.8%)	0 (0%)	25
	FEV₁<LLN	8 (18.2%)	11 (25.0%)	19	FEV₁<LLN	8 (18.2%)	11 (25.0%)	19
	Total	33	11	44	Total	33	11	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.
FEV₁, forced expiratory volume in 1 s; GLI, Global Lung Function Initiative; LLN, lower limit of normal; NE, North East; SE, South East.