Table 4.

Correlation between tube size and patient characteristics

Relation to drain size	r (Pearson's correlation coefficient test)	P value
Age	-0.00011	0.99
BSA	0.23	0.06
BMI	0.23	0.07
RTS	0.22	0.07
ISS	0.009	0.95
Chest AIS	0.076	0.54

BSA: body surface area, BMI: body mass index, RTS: Revised Trauma Score, ISS: Injury Severity Score, AIS: Abbreviated Injury Scale.