Table 2. Unadjusted Postoperative Mortality Rates and Risk Measures in a Study of Children Undergoing Tonsillectomy.
| Characteristic | No. | Postoperative deaths per 100 000 operations (95% CI) | |||
|---|---|---|---|---|---|
| Deaths | Operations | Ratea | Absolute rate differencea | Rate ratioa | |
| All tonsillectomies | 36 | 505 182 | 7.04 (4.97 to 9.98) | ||
| Surgical era | |||||
| 2005-2010 | 21 | 267 451 | 7.02 (4.53 to 10.88) | Reference | 1 [Reference] |
| 2011-2017 | 15 | 237 731 | 7.08 (4.07 to 12.31) | −0.05 (−5.15 to 5.06) | 1.01 (0.50 to 2.04) |
| Age group, y | |||||
| <3 | ≤10b | 44 957 | 14.06 (6.43 to 30.75) | 10.89 (−0.95 to 22.73) | 3.46 (1.24 to 9.67) |
| 3-4 | ≤10b | 101 809 | 7.07 (2.69 to 18.63) | 3.24 (−4.13 to 10.60) | 1.74 (0.54 to 5.64) |
| 5-9 | ≤10b | 198 833 | 4.06 (2.09 to 7.88) | Reference | 1 [Reference] |
| 10-14 | ≤10b | 69 371 | 5.14 (1.91 to 13.79) | 1.51 (−4.42 to 7.45) | 1.27 (0.38 to 4.16) |
| 15-20 | 11 | 90 212 | 11.58 (6.38 to 21.04) | 8.27 (0.56 to 15.99) | 2.85 (1.17 to 6.97) |
| Sexc | |||||
| Female | 21 | 250 088 | 8.10 (5.15 to 12.72) | 1.88 (−3.20 to 6.95) | 1.30 (0.63 to 2.68) |
| Male | 14 | 239 250 | 6.22 (3.54 to 10.94) | Reference | 1 [Reference] |
| Race and ethnicityd | |||||
| Black | ≤10b | 49 473 | 15.08 (7.51 to 30.24) | 7.54 (−3.51 to 18.58) | 1.99 (0.86 to 4.59) |
| Hispanic | ≤10b | 88 312 | 5.06 (1.70 to 15.03) | −2.48 (−8.15 to 4.02) | 0.67 (0.20 to 2.18) |
| White | 21 | 284 182 | 7.54 (4.77 to 11.91) | Reference | 1 [Reference] |
| Othere | ≤10b | 83 215 | 3.80 (1.20 to 12.00) | −3.90 (−10.15 to 2.24) | 0.50 (0.14 to 1.73) |
| Sleep-disordered breathing | |||||
| Yes | 13 | 143 699 | 10.14 (5.62 to 18.31) | 3.73 (−2.85 to 10.31) | 1.75 (0.85 to 3.63) |
| No | 23 | 361 483 | 5.78 (3.79 to 8.82) | Reference | 1 [Reference] |
| Any complex chronic condition | |||||
| Yes | 16 | 14 299 | 117.22 (69.12 to 198.80) | 114.64 (52.02 to 177.25) | 30.32 (15.03 to 61.13) |
| No | 20 | 490 883 | 3.87 (2.44 to 6.13) | Reference | 1 [Reference] |
| Total complex chronic conditions | |||||
| 0 | 20 | 490 883 | 3.87 (2.44 to 6.13) | Reference | 1 [Reference] |
| 1 | ≤10b | 11 883 | 40.95 (16.13 to 103.92) | 37.63 (−1.03 to 76.30) | 10.59 (3.75 to 29.94) |
| 2 | ≤10b | 1782 | 294.98 (100.38 to 866.77) | 291.46 (−26.84 to 609.76) | 76.28 (23.62 to 246.39) |
| ≥3 | ≤10b | 634 | 1010.50 (476.71 to 2141.99) | 1006.66 (247.48 to 1765.84) | 261.33 (108.22 to 631.05) |
a
Rates, differences, and ratios are sample-weighted. The unit of analysis was tonsillectomies.
b
Data are suppressed for cells with ≤10 observations, in accordance with Healthcare and Cost Utilization Project data use agreement.
c
Information on sex missing for 15 844 tonsillectomy discharges.
d
Categories based on uniform coding in discharge data sets distributed by the Healthcare and Cost Utilization Project.
e
Category includes Asian or Pacific Islander, Native American, other/multiple races, and unknown/missing.