ONFH	osteonecrosis of femoral head
VTE	venous thromboembolic events
LLS	lower limb surgery
NHIRD	national health insurance research database
PHR	partial hip replacement
THR	total hip replacement
NSAID	non-steroidal anti-inflammatory drug
DVT	deep venous thrombosis
PE	pulmonary embolism
CI	confidence interval
HR	hazard ratio
MACCE	major adverse cardiovascular or cerebrovascular events