@inproceedings{niu-etal-2021-statistically, title = "Statistically Evaluating Social Media Sentiment Trends towards {COVID}-19 Non-Pharmaceutical Interventions with Event Studies", author = "Niu, Jingcheng and Rees, Erin and Ng, Victoria and Penn, Gerald", editor = "Magge, Arjun and Klein, Ari and Miranda-Escalada, Antonio and Al-garadi, Mohammed Ali and Alimova, Ilseyar and Miftahutdinov, Zulfat and Farre-Maduell, Eulalia and Lopez, Salvador Lima and Flores, Ivan and O'Connor, Karen and Weissenbacher, Davy and Tutubalina, Elena and Sarker, Abeed and Banda, Juan M and Krallinger, Martin and Gonzalez-Hernandez, Graciela", booktitle = "Proceedings of the Sixth Social Media Mining for Health ({\#}SMM4H) Workshop and Shared Task", month = jun, year = "2021", address = "Mexico City, Mexico", publisher = "Association for Computational Linguistics", url = "https://preview.aclanthology.org/fix-sig-urls/2021.smm4h-1.1/", doi = "10.18653/v1/2021.smm4h-1.1", pages = "1--6" }