Study on Main Drugs and Drug Combinations of Patient-Controlled Analgesia Based on Text Mining

Table 2

Part of the drug-sentence matrix.

Drug name	1	2	3	4	5	6	7	8
Morphine	0	1	1	1	1	0	0	0
Dexmedetomidine	0	0	0	0	0	0	0	0
Fentanyl	0	0	0	0	0	1	0	0
Remifentanil	0	0	0	0	0	0	0	0
Ropivacaine	1	1	0	1	0	0	1	0
Sufentanil	0	0	0	0	0	0	0	1
Oxycodone	0	0	0	0	0	0	0	0
Ketamine	0	1	0	0	0	1	0	0
Bupivacaine	0	0	0	0	0	0	0	0