Table 5. Articles reporting the number of hyponatremic patients among traumatic rhabdomyolysis patients.

^#: number of hyponatremic patients

TUR: trapped under rubble; HE: heavy exercise; HS: heat stroke

Studies (Authors, year)	Cause	Cut-off (mEq/dl)	Sample size	Number#	Test timing
Sinert et al., 1994 [43]	HE	135	35	2	On admission
He et al., 2011 [30]	TUR	135	132	45	On admission
Zhang et al., 2013 [28]	TUR	135	180	91	On admission
Safari et al., 2017 [24]	TUR	135	118	62	On admission
Thongprayoon et al., 2020 [20]	HS	Not mentioned	1049	116	Not mentioned
Mao et al., 2021 [19]	HE	135	71	1	On admission