Table 3.

Presence of B‐lines by volunteer characteristics

All volunteers		B‐LINES				P‐value for none vs. any
		Absent		Present
	Total N	n	%	n	%
	200	175	87.5	25	12.5
Sex
Male	89	81	91.0	8	9.0	0.179
Female	111	94	84.7	17	15.3
Age group
<50	100	80	80.0	20	20.0	0.001
50+	100	95	95.0	5	5.0
Smoking status
Current smokers	13	9	69.2	4	30.8	0.062
vs. All others	187	166	88.8	21	11.2
Ex‐smokers	65	59	90.8	6	9.2	0.527
vs. Never smokers	122	107	87.7	15	12.3
Any smoking	78	68	87.2	10	12.8	0.913
vs. Never smokers	122	107	87.7	15	12.3
Lung disease history
Any lung disease history	53	42	79.2	11	20.8	0.034
No lung disease history	147	133	90.5	14	9.5
Asthma	36	28	77.8	8	22.2	0.051
No asthma	164	147	89.6	17	10.4
History of pneumonia	23	19	82.6	4	17.4	0.500
No history pneumonia	177	156	88.1	21	11.9