Table 2.
Number and rate of malaria-related hospitalizations in the United States, by demographic, NIS, 2000–2014
| Unweighted frequency | Percent of malaria-related hospitalizations | Weighted frequency | Lower 95% CL weight frequency | Upper 95% CL weight frequency | Rate per 1 million population | Lower 95% CL rate | Upper 95% CL rate | |
|---|---|---|---|---|---|---|---|---|
| Sex | ||||||||
| Male | 2,748 | 60.1 | 13,244 | 12,546 | 13,942 | 5.97 | 5.65 | 6.28 |
| Female | 1,803 | 39.4 | 8,684 | 8,148 | 9,220 | 3.78 | 3.55 | 4.02 |
| Pregnant | 252 | 5.5 | 1,220 | 1,007 | 1,432 | 0.53 | 0.44 | 0.62 |
| Missing | 20 | 0.4 | 96 | – | – | – | – | – |
| Race | ||||||||
| White | 925 | 20.2 | 4,453 | 4,125 | 4,781 | 1.49 | 1.38 | 1.60 |
| Black | 2,011 | 44.0 | 9,735 | 8,991 | 10,478 | 16.98 | 15.68 | 18.28 |
| Hispanic | 246 | 5.4 | 1,169 | 986 | 1,351 | 1.70 | 1.43 | 1.96 |
| Asian/Pacific Islander | 231 | 5.1 | 1,103 | 947 | 1,259 | 4.94 | 4.42 | 6.05 |
| Native American | 35 | 0.8 | 174 | 115 | 234 | 4.64 | 3.06 | 6.24 |
| Other | 399 | 8.7 | 1,913 | 1,696 | 2,129 | – | – | – |
| Missing | 725 | 15.9 | 3,483 | – | – | – | – | – |
| Age (years) | ||||||||
| Under 5 | 179 | 3.9 | 863 | 708 | 1,018 | 2.89 | 2.38 | 3.42 |
| 5–14 | 354 | 7.7 | 1,725 | 1,472 | 1,978 | 2.81 | 2.40 | 3.22 |
| 15–24 | 739 | 16.2 | 3,560 | 3,260 | 3,860 | 5.57 | 5.10 | 6.04 |
| 25–44 | 1,688 | 36.9 | 8,148 | 7,656 | 8,639 | 6.53 | 6.14 | 6.92 |
| 45–64 | 1,211 | 26.5 | 5,819 | 5,400 | 6,238 | 5.14 | 4.77 | 5.51 |
| 65–84 | 358 | 7.8 | 1,708 | 1,520 | 1,896 | 3.37 | 3.00 | 3.74 |
| Over 85 | 35 | 0.8 | 166 | 111 | 222 | 2.19 | 1.45 | 2.91 |
| Missing | 8 | 0.2 | 40 | – | – | – | – | – |
| Mean (range) | 37.0 | (0) | (96) | 36.4 | 37.6 | – | – | – |
| Total | 4,572 | 100.0 | 22,029 | 21,001 | 23,057 | 4.88 | 4.50 | 5.26 |
CL = confidence level; NIS = Nationwide Inpatient Sample. Unweighted frequencies are the raw frequencies in the NIS, and weighted raw frequencies represent national estimates.