From: YouTube videos as a source of medical information during the Ebola hemorrhagic fever epidemic
Variables | High relevance videos N = 42 Median (IQR) or mean (SD) | Low relevance videos N = 44 Median (IQR) or mean (SD) | P value |
---|---|---|---|
Video source | |||
GA/NA | 18 | 18 | 0.85 |
IU/W | 24 | 26 | |
Video characteristics | |||
Number of views | 186,705 (52,846–607,829) | 43,796 (10,709–86,264) | <0.001 |
Number of channel subscription | 517,489 (57,399–972,098) | 118,650 (41,218–928,585) | 0.06 |
Number of likes | 1119 (373–2913) | 224 (87–568) | <0.01 |
Number of dislikes | 105 (43–348) | 25 (8–53) | <0.01 |
Like/dislike ratio | 8.2 (5.1–18.8) | 10.06 (7.9–14.9) | 0.74 |
Number of likes/1000 views | 6.8 (2.9–9.5) | 7.90 (3.8–12.8) | 0.20 |
Number of dislikes/1000 views | 0.6 (0.3–1.1) | 0.6 (0.2–1.2) | 0.74 |
Time watched (years) | 2 (0.6–5.2) | 0.5 (0.2–0.9) | <0.01 |
Average view duration (s) | 323 (207–529) | 392 (221–664) | 0.34 |
Number of new subscriptions | 208 (36–717) | 32 (9–86) | <0.001 |
Number of shares | 519 (128–1026) | 98 (52–233) | <0.01 |
Video information and quality index (VIQI) content assessment | |||
Flow | 3.67 (1.05) | 3.11 (0.81) | 0.01 |
Information | 2.71 (1.58) | 2.30 (1.05) | 0.38 |
Quality | 2.21 (1.00) | 2.16 (0.91) | 0.84 |
Precision | 3.00 (1.51) | 2.02 (0.85) | <0.01 |
Total score | 11.60 (4.64) | 9.59 (2.44) | 0.16 |
Medical information and content index (MICI) content assessment | |||
Prevalence | 1.93 (1.88) | 1.16 (1.64) | 0.03 |
Transmission | 2.12 (1.90) | 1.25 (1.70) | 0.04 |
Clinical symptoms | 1.88 (1.98) | 0.68 (1.43) | <0.01 |
Screening/testing | 0.62 (1.12) | 0.341 (0.89) | 0.12 |
Treatment/outcomes | 1.40 (1.73) | 0.75 (1.40) | 0.03 |
Total score | 7.95 (7.80) | 4.18 (5.69) | 0.03 |