Table 2
Number of sharing
Intervention video
Control video
Risk ratio
(95% CI)
P value
Shared/allocated (ITT)
44/4178 (1.1%)
37/4175 (0.9%)
1.2 (0.8 to 1.4)
0.44
Shared/watched (PP)
44/221 (19.9%)
37/215 (17.2%)
1.2 (0.8 to 1.7)
0.47