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. 2021 Jul 7;8(1):e000815. doi: 10.1136/bmjresp-2020-000815

Table 5.

Auscultation of crackles at the initial clinic visit according to patient and clinician characteristics (n=290)

	None	Fine crackles	Coarse crackles	Both	P value
IPF, n (%)
Obese (BMI (≥30 Kg/m²)	1 (1.6%)	49 (79.0%)	3 (4.8%)	9 (14.6%)	0.788
Non-obese (BMI<30 Kg/m²)	1 (1.5%)	48 (71.6%)	4 (6.0%)	14 (20.9%)	0.788
Non-IPF, n (%)
Obese (BMI (≥30 Kg/m²)	11 (14.6%)	48 (64.0%)	8 (10.7%)	8 (10.7%)	0.878
Non-obese (BMI<30 Kg/m²)	14 (16.3%)	50 (58.1%)	10 (11.6%)	12 (14.0%)	0.878
IPF, n (%)
Emphysema on CT	1 (2.6%)	30 (78.9%)	4 (10.6%)	3 (7.9%)	0.100
No emphysema on CT	1 (1.1%)	67 (73.6%)	3 (3.3%)	20 (22.0%)	0.100
Non-IPF, n (%)
Emphysema on CT	7 (17.0%)	27 (65.9%)	3 (7.3%)	4 (9.8%)	0.696
No emphysema on CT	18 (15.0%)	71 (59.2%)	15 (12.5%)	16 (13.3%)	0.696
IPF, n (%)
With COPD	1 (7.1%)	10 (71.5%)	1 (7.1%)	2 (14.3%)	0.547
Without COPD	1 (0.9%)	87 (75.7%)	6 (5.2 %)	21 (18.2%)	0.547
Non-IPF, n (%)
With COPD	3 (20.0%)	7 (46.7%)	3 (20.0%)	2 (13.3%)	0.625
Without COPD	22 (15.1%)	91 (62.3%)	15 (10.3%)	18 (12.3%)	0.625
IPF, n (%)
Resident(n=10)*	0 (0%)	11 (84.6%)	2 (15.4%)	0 (0%)	0.109
ILD fellow (n=4)*	0 (0%)	44 (75.9%)	2 (3.4%)	12 (20.7%)
Staff respirologist (n=1)	2 (3.4%)	42 (72.4%)	3 (5.2%)	11 (19.0%)
Non-IPF, n (%)
Resident (n=16)*	2 (8.7%)	14 (60.9%)	4 (17.4%)	3 (13.0%)	0.755
ILD fellow (n=4)*	15 (20.0%)	44 (58.6%)	8 (10.7%)	8 (10.7%)
Staff respirologist (n=1)	8 (12.7%)	40 (63.5%)	6 (9.5%)	9 (14.3%)

*Resident includes respirology fellows, internal medicine residents and other residents rotating in respirology.

BMI, body mass index; COPD, chronic obstructive pulmonary disease; ILD, interstitial lung disease; IPF, idiopathic pulmonary fibrosis.