Table 3. Multivariable linear regression analysis for determining the difference in serum hemoglobin level between tranexamic acid and placebo groups.

Variable	Unstandardized coefficients		p -value	95% confidence interval for beta
	Beta	Standard error		Lower bound	Upper bound
Tranexamic acid use	0.448	0.127	0.038	0.224	0.750
Female gender	2.725	0.273	0.064	-0.745	6.194
Age	-0.148	0.037	0.157	-0.619	0.323
Body mass index	0.043	0.025	0.335	-0.275	0.362
History of hypertension	1.147	0.185	0.102	-1.204	3.497
History of diabetes	-0.294	0.053	0.113	-0.965	0.377
History of hyperlipidemia	0.363	0.039	0.068	-0.132	0.858
Current smoking	0.143	0.021	0.092	-0.122	0.409
Serum hemoglobin	0.075	0.026	0.215	-0.260	0.410
White blood count	0.120	0.012	0.065	-0.035	0.275
Platelet count	-0.766	0.151	0.124	-2.688	1.157
Fasting blood sugar,	-0.211	0.035	0.105	-0.657	0.234
Fasting high-density lipoprotein	0.112	0.019	0.109	-0.134	0.357
Serum creatinine	0.057	0.054	0.372	-0.089	0.226

R square = 0.399; adjusted R square = 0.217. Source: Elaborated by the authors.