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Table 2 Length of stay, average cost, incidence and cost changes of hospitalizations associated with S. aureus skin and soft tissue infections (SA-SSTI) by age group in the U.S.

From: Incidence and cost of hospitalizations associated with Staphylococcus aureusskin and soft tissue infections in the United States from 2001 through 2009

  Year Period change
  2001 2009 2001–2009
Item Estimate SE Estimate SE % Change
SA-SSTI length of stay of hospitalization      
All ages 9.91 0.16 7.26 0.11 -27%*
0–17 yrs. 8.14 0.67 4.65 0.23 -43%*
18–44 yrs 8.31 0.19 5.91 0.10 -29%*
45–64 yrs. 10.00 0.22 7.65 0.11 -23%*
65–74 yrs. 11.03 0.25 8.82 0.18 -20%*
75 plus yrs. 10.71 0.19 8.85 0.18 -17%*
SA-SSTI average cost of hospitalization      
All ages 21,287 641 11,622 200 -45%*
0–17 yrs. 22,601 2,881 7,740 887 -66%*
18–44 yrs. 18,675 738 9,309 214 -50%*
45–64 yrs. 22,379 784 12,539 213 -44%*
65–74 yrs. 23,206 795 14,456 278 -38%*
75 plus yrs. 20,587 670   13,346 231 -35%*
SA-SSTI hospitalizations per 100,000 population      
All ages 56.68 1.38 117 2.99 +107%*
0–17 yrs. 11.29 1.25 45.74 3.62 +305%*
18–44 yrs. 29.77 0.99 82.03 2.47 +176%*
45–64 yrs. 77.00 2.10 158.84 4.45 +106%*
65–74 yrs. 145.57 4.52 217.29 6.25 +49%*
75 plus yrs. 258.01 8.03 327.20 9.86 +27%*
National annual cost of SA-SSTI hospitalizations (in $ Billion)      
All ages 3.36 0.16 4.22 0.14 +26%*
0–17 yrs. 0.16 0.03 4.22 0.14 +61%*
18–44 yrs 0.58 0.04 0.88 0.03 +51%*
45–64 yrs. 1.07 0.06 1.59 0.06 +49%
65–74 yrs. 0.62 0.04 0.66 0.02 +5%
75 plus yrs. 0.93 0.05 0.83 0.03 -10%
  1. Note: cost estimates are in constant 2010 US dollar. Asterisk (*) denotes statistical significant differences at alpha = 0.05.