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Table 4 Classification of videos including advertisements and sentiment analysis of comments

From: Contents analysis of thyroid cancer-related information uploaded to YouTube by physicians in Korea: endorsing thyroid cancer screening, potentially leading to overdiagnosis

 

N (%)

Average number

of views

(Mean ± SD)

Average number

of recommend

(Mean ± SD)

Comments

(included in the

analysis)

Comments (%)

Positive

Neutral

Negative

Advertisement of

insurance

(company)

19 (61.3)

1,983.2 ± 278.8

33.7 ± 8.3

171 (113)

69.0

6.2

24.8

Advertisement of

food therapies

7 (22.6)

31,767.7 ± 14,849.9

622.0 ± 300.1

203 (184)

83.7

6.5

9.8

Advertisement of

alternative

medicine/nursing

facilities

5 (16.1)

1,258.0 ± 100.2

44.6 ± 17.3

66 (58)

86.2

8.6

5.2