Category Archives: Uncategorized

Estimates of Excess Fatalities in Puerto Rico, Post-Maria

Given some criticisms of the Harvard School of Public Health led study, published in the New England Journal of Medicine, I thought it useful to compare point estimates and 95% confidence intervals of several extant studies, placed in a time context.


Figure 1: Estimates from Santos-Lozada and Jeffrey Howard (Nov. 2017) for September and October, and Nashant Kishore et al. (May 2018) for December 2017 (blue triangles), and Roberto Rivera and Wolfgang Rolke (Feb. 2018) (red square), end-of-month figures, all on log scale. + indicate upper and lower bounds for 95% confidence intervals. Cumulative figure for October author’s calculations based on reported monthly figures.

The growth rate of cumulative excess fatalities is in the range of 70% per month.

Steven Kopits has characterized the study published in the New England Journal of Medicine as “garbage”, noting that it uses survey data. He has instead relied on Demographic Registry Data in his assessment. He places cumulative excess deaths at 200-400. Interestingly, Rivera and Rolke (2018) also used Demographic Registry Data and concluded that 822 excess deaths occurred from September 20 through October 31 alone, with 95% CI (605, 1039). Extrapolating linearly through end-December (time span conforming to the NEJM article) would imply 2603 excess deaths, well within the 95% confidence interval of 793-8498.

It should be also remarked upon that the Santos-Lozada and Howard study uses actual statistics for baseline from Puerto Rico Vital Statistics System, and cited numbers processed through Puerto Rico Department of Health for September (extrapolated for October). Hence, this estimate is also not survey based.

Hence, we have two sets of non-survey based estimates that as of October exceed Mr. Kopits’ upper bound of 400.

All that is old is new again

Tonight:

Nearly century and a half ago, political cartoonist Tomas Nast presents a “harsh commentary on the hypocrisy of these new Americans and their willingness to oppress others who are in the same circumstances in which they found themselves 30 years earlier. The once oppressed have now become the oppressors.”:

“Throwing Down the Ladder by Which They Rose,” by Thomas Nast, 23 July 1870. Source

For more, see this.

Heckuva Job, Donny! Puerto Rico Edition

From New England Journal of Medicine, results of a study led by researchers at Harvard T.H. Chan School of Public Health and Beth Israel Deaconess Medical Center:


Figure 4. Estimates of Excess Deaths and Reported Causes of Death.
Panel A shows a comparison of estimates of excess deaths from official reports, press (New York Times)8 and academic (Santos–Lozada and Howard)9 reports, and from our survey. Panel B shows deaths according to the month of death and the age at death as reported in our survey, categorized according to the cause of death reported by the household member. Two persons who died of similar causes at the same age are represented by dots that are superimposed in December; thus, the 37 points shown represent 38 deaths after the hurricane.

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Semi-automatic Rifle Use and Mass Shooting Casualties, 1982M08-2018M04


Figure 1: Cumulative mass shooting fatalities from incidents where semi-automatic rifles used (blue), non-fatal injured (light blue), fatalities where other weapons (handguns, semi-automatic handguns, rifles, shotguns) used (red), non-fatal injured (pink), through April 2018. Light green denotes assault weapons ban. Orange denotes 2017M01-2018M04. Source: Mother Jones, accessed 5/18/2018, and author’s calculations.

The above graph does not incorporate the estimated 10 deaths and additional injuries incurred today in Santa Fe, TX.

Cumulative Mass Shooting Casualties since 2009M01, 2017M01

Thankfully, Mr. Trump in conjunction with the Republican controlled Congress have implemented policies to address this issue in manner supported by evidence-based research.


Figure 1: Cumulative fatalities from mass shootings since 2009M01 (blue), since 2017M01 (red), on a log scale. May observation assumes lower bound of 8 fatalities. Source: Mother Jones accessed 5/18, news accounts, author’s calculations.

It took 4-1/2 years from 2009M01 to match the number of fatalities that have been recorded in the 16 months since 2017M01.

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Prognostications on Economic Policy Uncertainty and Economic Activity

From WSJ op-ed via AEI:

The second factor [in the slow recovery] is less obvious, but possibly also of great importance…. Congress and [the] President signaled their intentions to introduce major changes in taxes, government spending and regulations–changes that could radically transform the American economy.

… other government proposals created greater uncertainty and risk for businesses and investors. …

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Liberal Biased Uncertainty Index Elevated

Reader CoRev argues that economic uncertainty indicators such as the Baker, Bloom and Davis based on content analysis of newspaper articles are instances of GIGO (garbage in, garbage out). Here is a plot of another indicator suggesting current elevated uncertainty.


Figure 0: Measure of risk/uncertainty (red). Observation for April is data through 4/23.
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