Table 2. Demographic data of 32 pugs included in radiographic measurements.

N = 32	mean/median	SD/IQR	range (min—max)
age* [years]	4.8	2.7–6.5	2–10.5
body weight [kg]	8.9	1.2	6.6–11.6
BCS	5.3	0.7	4–7
LA:Ao	1.32	0.16	0.97–1.62
female (n/i)	16 (8/8)
male (n/i)	16 (3/13)
BCS group (1-5/6-9)	21/11
BOAS (N = 26)	BOAS- (N = 11) / BOAS+ (N = 15)

Abbreviations: BCS, body condition score; BOAS, functional grading of Brachycephalic Obstructive Airway Syndrome; i, intact; IQR, interquartile range; kg, kilogram; LA:Ao, left-atrial-to-aortic-root diameter; max, maximum; min, minimum; N, number of subjects; n, neutered; SD, standard deviation.

Note: BOAS functional grading system according to Liu et al. 2015, modified to present study design. Median and IQR are stated for non-normally distributed variables, marked with an asterisk (*).