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Table 1 Sentiment analysis for reviews of Viagra, Levothyroxine, Oseltamivir and Apixaban

From: Machine learning in medicine: a practical introduction to natural language processing

Drug

Number of positive sentiments

Number of negative sentiments

Percentage of sentiments classified as positive

Viagra

3

6

33%

Levothyroxine

7

16

30%

Oseltamivir

3

44

6%

Apixaban

0

2

0%