| Literature DB >> 34903528 |
Thomas Niederkrotenthaler1,2, Ulrich S Tran2,3, Madelyn Gould4, Mark Sinyor5,6, Steven Sumner7, Markus J Strauss1, Martin Voracek2,3, Benedikt Till1,2, Sean Murphy8, Frances Gonzalez8, Matthew J Spittal9, John Draper8.
Abstract
OBJECTIVE: To assess changes in daily call volumes to the US National Suicide Prevention Lifeline and in suicides during periods of wide scale public attention to the song "1-800-273-8255" by American hip hop artist Logic.Entities:
Mesh:
Year: 2021 PMID: 34903528 PMCID: PMC8667739 DOI: 10.1136/bmj-2021-067726
Source DB: PubMed Journal: BMJ ISSN: 0959-8138
Fig 1Daily number of tweets including “Logic” and “1-800-273-8255,” calls to the National Suicide Prevention Lifeline, and suicides in the United States from March 2017 to April 2018. Coloured areas represent the duration of impact, as identified through visual inspection and used in the analysis. Dates are based on the findings of the change-point analysis (supplementary text S2). Source of suicide data: Centers for Disease Control and Prevention; suicide defined by ICD-10 underlying cause of death codes X60–X84, Y87.0, and U03
Media events related to Logic’s song “1-800-273-8255”
| Event | Date | Duration of public attention | No of tweets | Mean (SD) No of tweets per day in impact period |
|---|---|---|---|---|
| Song release | 28 April 2017 | 28-30 April 2017 (3 days) | 3454 | 1151 (1085) |
| Video release | 17 August 2017 | 17-21 August 2017 (5 days) | 5080 | 1016 (745) |
| MTV Video Music Awards | 27 August 2017 (evening; end 11 pm) | 28 August to 24 September 2017 (28 days) | 37 060 | 1324 (1822) |
| News on impact of song | 10 October 2017 | 10-12 October 2017 (3 days) | 2401 | 800 (577) |
| Grammy Awards | 28 January 2018 (evening; end 11 pm) | 29-31 January 2018 (3 days) | 5649 | 1883 (2493) |
|
| 31 March 2017 | 31 March to 30 June 2017 (92 days) | 1 673 655 | 18 192 (24 124) |
SARIMA model fit and excess calls to the National Suicide Prevention Lifeline during media events related to Logic’s song “1-800-273-8255”
| Dummy variable | Raw association | Adjusted for all exogenous events | No of excess calls (95% CI) | % increase (95% CI) | ||||
|---|---|---|---|---|---|---|---|---|
| Estimate (SE) | P value | Estimate (SE) | P value | |||||
| Song release | 191.59 (96.69) | 0.048 | 205.84 (94.45) | 0.03 | 617.52 (62.15 to 1172.89) | 5.25 (0.53 to 9.97) | ||
| Video release | 76.29 (92.46) | 0.41 | 60.27 (90.51) | 0.51 | 301.35 (−585.65 to 1188.35) | 1.67 (−3.25 to 6.60) | ||
| MTV Video Music Awards | 373.34 (77.97) | <0.001 | 364.82 (74.76) | <0.001 | 10214.96 (6112.13 to 14317.79) | 8.46 (5.06 to 11.86) | ||
| News impact | 152.67 (96.33) | 0.11 | 158.71 (95.15) | 0.10 | 476.13 (−83.35 to 1.035,61) | 3.57 (−0.62 to 7.75) | ||
| Grammy Awards | 263.16 (95.51) | 0.006 | 252.88 (95.00) | 0.008 | 758.64 (200.04 to 1317.24) | 6.45 (1.70 to 11.22) | ||
| Three main events | 256.65 (51.81) | <0.001 | 291.62 (49.83) | <0.001 | 9915.08 (6594.41 to 13235.75) | 6.87 (4.57 to 9.18) | ||
SARIMA=seasonal autoregressive integrated moving average; SE=standard error.
Data pre-7 April 2017 (1 January 2010 to 6 April 2017) were checked for additive and innovative outliers and level shifts, which were integrated when necessary. A SARIMA(1,1,2)(1,0,1) model (see supplementary text S1 for an explanation of these parameters), stationary R2=0.61, Box-Ljung Q=42.99, degrees of freedom=13, P<0.001, was fitted to the pre-7 April 2017 data. This model was subsequently used for the analysis of the whole time series. In total, there were 24 outliers in the pre-April data, some related to specific events, others to possible technical anomalies in call registration. Despite modelling these, the Box-Ljung statistic remained significant. This was most likely related to a continuous but slight increase in variance over time (heteroscedasticity). The increase in variance was small and the analysis had sufficient power to detect even tiny effects in the residuals. Nonetheless, the time series model used was well adjusted for the outliers in these time series data (see supplementary appendix for detailed descriptions of the model, all model parameters, and further adjusted analyses).
SARIMA model fit and excess number of suicides during media events related to Logic’s song “1-800-273-8255”
| Dummy variable | Raw association | Adjusted for all exogenous events | No of excess suicides (95% CI) | % decrease (95% CI) | ||||
|---|---|---|---|---|---|---|---|---|
| Estimate (SE) | P value | Estimate (SE) | P value | |||||
| Song release | −10.62 (7.53) | 0.16 | −11.02 (7.55) | 0.15 | −33.06 (−77.45 to 11.33) | −9.29 (−21.76 to 3.18) | ||
| Video release | 7.90 (6.17) | 0.20 | 7.41 (6.19) | 0.23 | 37.05 (−23.61 to 97.71) | 5.23 (−3.33 to 13.80) | ||
| MTV Video Music Awards | −4.12 (3.72) | 0.27 | −5.37 (3.89) | 0.16 | −150.36 (−363.84 to 63.12) | −4.03 (−9.75 to 1.69) | ||
| News impact | 11.29 (7.53) | 0.13 | 11.76 (7.54) | 0.12 | 35.28 (−9.06 to 79.62) | 8.07 (−2.07 to 18.22) | ||
| Grammy Awards | −10.22 (7.54) | 0.18 | −10.12 (7.54) | 0.18 | −30.36 (−74.70 to 13.98) | −7.93 (−19.50 to 3.65) | ||
| Logic main events | −6.23 (3.06) | 0.04 | −7.20 (3.13) | 0.02 | −244.80 (−453.38 to −36.22) | −5.48 (−10.14 to −0.81) | ||
SARIMA=seasonal autoregressive integrated moving average; SE=standard error.
Data pre-7 April 2017 (1 January 2010 to 6 April 2017) were checked for additive and innovative outliers and level shifts, which were integrated when necessary. A SARIMA(1,0,3)(1,0,1) model (see supplementary text S1 for an explanation of these parameters), stationary R2=0.45, Box-Ljung Q=13.37, degrees of freedom=13, P=0.43, was fitted to the pre-7 April 2017 data. This model was subsequently used for analysis of the whole time series (see supplementary appendix for detailed descriptions of the model, all model parameters, and further adjusted analyses).