Table 1. Trends in intervention procedures among hospitalizations for ischemic stroke* (n = 4,248,855), Nationwide Inpatient Sample, 1999-2008.
| 1999-00 | 2001-02 | 2003-04 | 2005-06 | 2007-08 | |
| Hospitalizations with ischemic stroke (weighted) | |||||
| Total hospitalizations | 909,064 | 883,209 | 830,751 | 803,241 | 822,691 |
| Intervention group | |||||
| DC + rtPA | NR | 27 | 36 | 97 | 174 |
| DC only | 346 | 316 | 435 | 669 | 1,016 |
| rtPA only | 8,374 | 8,887 | 10,509 | 16,850 | 24,619 |
| DC, overall | 351 | 343 | 471 | 766 | 1,190 |
| Prevalence, per 10,000 hospitalizations with ischemic stroke | |||||
| DC + rtPA | 0.05 (0.00) | 0.30 (0.00) | 0.43 (0.00) | 1.21 (0.00) | 2.11 (0.00) |
| DC only | 3.81 (0.01) | 3.58 (0.00) | 5.24 (0.01) | 8.33 (0.01) | 12.35 (0.01) |
| rtPA only | 92.11 (0.04) | 100.6 (0.05) | 126.5 (0.08) | 209.8 (0.10) | 299.3 (0.11) |
| DC, overall | 3.86 (0.01) | 3.88 (0.00) | 5.67 (0.01) | 9.54 (0.01) | 14.46 (0.01) |
Hospitalizations with ischemic stroke listed as the primary diagnosis were identified using the first listed International Classification of Disease 9th Revision clinical modifier (ICD-9 CM) diagnostic codes 433.11, 433.31, 433.81, 433.91, 434.01, 434.11, 434.91, and 436).
*Patients with the diagnosis of intracranial hemorrhage (ICD-9 CM diagnostic codes 430, 431, and 432.x) and patients with the diagnosis of posterior intracranial circulation occlusion (ICD-9 CM diagnostic codes 433.01 & 433.21) were excluded.
NR: estimates are not reportable due to a small sample size.