Volume 12, Number 11—November 2006
Research
Staphylococcus aureus–associated Skin and Soft Tissue Infections in Ambulatory Care
, L. Clifford McDonald†, Sanjay Mandal†, and Daniel B. Jernigan†
Table 1
Average annual percentage and rate of ambulatory care visits for selected skin and soft tissue infections, by diagnosis, United States*
| Diagnosis | ICD-9-CM code | 1992–1994 | 2001–2003 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| % visits† | 95% CI | No. visits/10,000 persons/y | 95% CI | % visits† | 95% CI | No. visits/10,000 persons/y | 95% CI | ||
| All visits | NA | NA | 376.3 | 340.4–412.3 | NA | NA | 410.7 | 368.7–452.7 | |
| Inflammatory disease of breast | 611.0 | 3.9 | 2.6–5.3 | 14.8 | 9.6–20.0 | 3.2 | 2.1–4.9 | 13.2 | 7.4–19.0 |
| Carbuncle and furuncle | 680 | 3.0 | 1.7–4.2 | 11.1 | 6.2–16.0 | 3.8 | 2.8–5.1 | 15.6 | 10.8–20.4 |
| Cellulitis and abscess of finger and toe | 681 | 9.4 | 7.7–11.2 | 35.5 | 28.0–43.1 | 9.7 | 7.6–12.3 | 39.8 | 29.6–50.1 |
| Other cellulitis and abscess | 682 | 46.2 | 42.6–49.9 | 174.0 | 150.4–197.7‡ | 53.2 | 49.1–57.2 | 218.4 | 188.7–248.1‡ |
| Impetigo | 684 | 14.3 | 11.5–17.2 | 53.9 | 42.2–65.6‡ | 8.9 | 6.9–11.6 | 36.7 | 26.4–47.0‡ |
| Unspecified local infection of skin and subcutaneous tissue | 686.9 | 9.6 | 7.2–11.9 | 36.1 | 26.9–45.3 | 8.0 | 6.3–10.1 | 32.7 | 24.8–40.6 |
| Other specified diseases of hair and hair follicles | 704.8 | 9.5 | 7.6–11.4 | 35.7 | 28.2–43.2 | 10.9 | 8.7–13.7 | 44.9 | 33.9–55.9 |
| Hydradenitis | 705.83 | 1.8 | 0.8–2.7 | 6.6 | 2.9–10.3 | 2.0 | 1.3–3.3 | 8.3 | 4.2–12.4 |
| Other skin and soft tissue infections | § | 3.4 | 1.7–5.1 | 12.9 | 6.6–19.2 | 1.9 | 1.1–3.2 | 7.8 | 3.5–12.1
*ICD-9-CM, International Classification of Diseases, Ninth Revision, Clinical Modification; CI, confidence interval; NA, not applicable. |
*ICD-9-CM, International Classification of Diseases, Ninth Revision, Clinical Modification; CI, confidence interval; NA, not applicable.
†Total exceeds 100% because >1 diagnosis may be reported per visit.
‡1992–1994 95% CI overlaps with 2001–03 95% CI, but p<0.05.
§Includes ICD-9-CM codes 683 (acute lymphadenitis), 686.0 (pyoderma), 728.0 (myositis), 771.4 (omphalitis of the newborn), and 771.5 (neonatal infective mastitis).