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Table 1 Summary of patient attributes

From: Decision tree-based learning to predict patient controlled analgesia consumption and readjustment

Attribute Name Description
Demographic:  
age patient age
gender patient gender
weight patient weight
Biomedical:  
pulse heart rate
sbp systolic blood pressue
dbp diastolic blood pressure
DM if patient is diabetic
HT if patient has hypertension
AMI if patient has acute myocardial infarction
ASA_CLASS * 1: healthy
2: mild systemic disease
3: major systemic disease
4: life-threatening disease or condition
5: not expected to survive
  6: donor
OP-related:  
OP_CLASS surgical type:
1: intrathoracic
2: upper intra-abdominal
3: lower intra-abdominal
4: laminectomy
5: major joints
6: limbs
7: head& neck
8: others
op_time surgical duration
URGENCY E: emergency surgery
R: regular surgery
ANS_WAY SA: spinal anesthesia
GA: general anesthesia
LE: lumbar epidural anesthesia
  NB: nerve blockade
PCA-related:  
loading_dose analgesia taken before PCA treatment
sucess_p_1hr~ sucess_p_24hr number of successful PCA demands in 1st–24th h
failure_p_1hr~ failure_p_24hr number of PCA demands that fail in 1st–24th h
pcadose_1hr~ pcadose_24hr total PCA dose in 1st–24th h
contidose_1hr~ contidose_24hr total continuous dose in 1st–24th h
readjustcount_1hr~ readjustcount_24hr number of PCA readjustment in 1st–24th h
p_timediff_mean_1hr~ p_timediff_mean_24hr mean of time gap between two consecutive PCA demands
p_timediff_var_1hr~ p_timediff_var_24hr variance of time gap between two consecutive PCA demans
pcamode_set_1hr~ pcamode_set_24hr setting of PCA mode:
(a) PCA and continuous
(b) PCA only
pcadose_set_1hr~ pcadose_set_24hr PCA dose setting in 1st–24th h
lockout_set_1hr~ lockout_set_24hr setting of minimum time gap between two adjacent PCA demands in 1st–24th h
4hrlimit_set_1hr~4hrlimit_set_24hr setting of maximum dosage allowed for every 4 h in 1st–24th h
  1. *ASA class is the commonly used preoperative index of physical status defined by the American Society of Anesthesiologists.