Table 2.
Distribution of healthcare event rates for the tree pollen and grass pollen analysis samples, 2013–2014
| Event Type |
||||||
|---|---|---|---|---|---|---|
| Phone Calls and E-mails | Provider Visits | UC/CDU/Emergency Department Visits | Hospital Admissions | |||
| Tree pollen analysis sample | Total N of beneficiary days | 4,838,700 | ||||
| Total N of events | 38,335 | 102,429 | 28,036 | 4,698 | ||
| Total N of census blocks | 16,129 | |||||
| Events per 100,000 beneficiary days by census block | Mean (SD) | 37.33 (33.90) | 99.75 (62.64) | 27.30 (27.51) | 4.57 (15.55) | |
| 75th percentile | 50.72 | 125.00 | 38.46 | 3.06 | ||
| Median | 33.33 | 92.59 | 23.33 | 0 | ||
| 25th percentile | 15.87 | 60.61 | 8.13 | 0 | ||
| Grass pollen analysis sample | Total N of beneficiary days | 3,967,734 | ||||
| Total N of events | 24,545 | 69,781 | 18,941 | 3,756 | ||
| Total N of census blocks | 16,129 | |||||
| Events per 100,000 beneficiary days by census block | Mean (SD) | 29.15 (30.92) | 82.87 (59.74) | 22.49 (26.30) | 4.46 (15.08) | |
| 75th percentile | 40.65 | 106.47 | 32.52 | 1.36 | ||
| Median | 24.64 | 73.91 | 17.67 | 0 | ||
| 25th percentile | 0 | 46.90 | 0 | 0 | ||
Definition of abbreviations: CDU = clinical decision unit; SD = standard deviation; UC = urgent care unit.
Utilization event counts and rates are for events that are likely respiratory related.