Excess Mortality of the Puerto Rican population in the mainland USA, overall and by month (October 2017 to March 2018)
| Observed deaths (1) | Δ mortality rate (95% CI) (2) | Population (100 000s) (3) | Expected deaths (4) | Excess deaths (95% CI) (5) | Ratio of observed to expected mortality (95% CI) (6) | |
| Panel A: month-specific estimates | ||||||
| October 2017 | 2093 | 0.022 | 56.596 | 2047 | 46 | 1.02 |
| (−0.006 to 0.051) | (−11.7 to 104.1) | (0.99 to 1.05) | ||||
| November 2017 | 2182 | 0.059 | 56.767 | 2056 | 126 | 1.06 |
| (0.041 to 0.078) | (87.1 to 164.7) | (1.04 to 1.08) | ||||
| December 2017 | 2551 | 0.065 | 56.974 | 2391 | 160 | 1.07 |
| (0.048 to 0.082) | (119.4 to 200.7) | (1.05 to 1.09) | ||||
| January 2018 | 2624 | 0.012 | 57.524 | 2592 | 32 | 1.01 |
| (−0.014 to 0.039) | (−36.1 to 100.5) | (0.99 to 1.04) | ||||
| February 2018 | 2275 | 0.059 | 57.708 | 2145 | 130 | 1.06 |
| (0.035 to 0.083) | (78.1 to 182.4) | (1.03 to 1.09) | ||||
| March 2018 | 2285 | 0.004 | 57.830 | 2276 | 9 | 1.00 |
| (−0.008 to 0.016) | (−19.1 to 36.8) | (0.99 to 1.02) | ||||
| Panel B: aggregate estimates | ||||||
| October 2017 to March 2018 | 14 010 | 0.037 | 57.233 | 13 496 | 514 | 1.04 |
| (0.025 to 0.050) | (346.5 to 681.0) | (1.03 to 1.05) | ||||
| October 2017 to December 2017 | 6826 | 0.037 | 56.779 | 6581 | 245 | 1.04 |
| (0.024 to 0.049) | (163.6 to 326.9) | (1.02 to 1.05) | ||||
Column 1 reports observed deaths of the Puerto Rican population in the mainland USA, and column 3 reports estimates of the overall population of Puerto Ricans in the mainland. Column 2 reports estimates of the difference in the natural logarithm of the mortality of Puerto Ricans relative to Cubans and Mexicans based on the aggregation of estimates from equation 2 (panel A) and equation 1 (panel B) estimated for each gender-by-age group, as well as 95% CIs in parentheses. Columns 4, 5 and 6 respectively report estimates of expected deaths, excess deaths and the ratio of observed to expected deaths calculated from observed deaths (column 1) and estimates of changes in mortality rates (column 2); 95% CIs of the level of excess deaths and of the ratio of observed to expected deaths are reported in parentheses.