Volume 9, Number 2—February 2003
Research
Health and Economic Impact of Surgical Site Infections Diagnosed after Hospital Discharge
Eli N. Perencevich*†
, Kenneth E. Sands*†, Sara E. Cosgrove*, Edward Guadagnoli‡, Ellen Meara‡, and Richard Platt§†‡
, Kenneth E. Sands*†, Sara E. Cosgrove*, Edward Guadagnoli‡, Ellen Meara‡, and Richard Platt§†‡Table 3
Univariate analysis of questionnaire respondents, surgical site infections (SSIs) studya
| Case-patient N (% or SDa) (N=50) | Control N (% or SDa) (N=123) | p value | |
|---|---|---|---|
| HRQOL with SF-12 |
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| Preoperative MCS-12 |
51.7 (+/-9.6) |
51.5 (+/-9.9) |
0.96b |
| Postoperative MCS-12 |
47.6 (11.6) |
52.4 (+/-9.2) |
0.025b |
| Preoperative PCS-12 |
41.1 (+/-12.7) |
45.0 (+/-10.9) |
0.058b |
| Postoperative PCS-12 |
33.9 (+/-10.0) |
38.7 (+/-9.8) |
0.003b |
| Change MCS-12 with surgery |
–4.1 (+/-11.0) |
0.9 (+/-9.6) |
0.004b |
| Change PCS-12 with surgery |
–7.2 (+/-10.6) |
–6.3 (+/-13.3) |
0.67b |
| Additional questions |
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| Time and productivity costs |
|||
| If employed, missed work |
66.7% |
62.3% |
0.81c |
| Average no. missed days at work |
61.2 (+/-38.6) |
57.5 (+/-40.6) |
0.95c |
| Unable to do regular activities |
60.6% |
69.5% |
0.39c |
| Missed activities, in bed >1/2 day |
63.6% |
41.8% |
0.043c |
| Average no. days missed activities |
49.6 (+/-41.3) |
50.1 (+/-42.0) |
0.90d |
| Additional costs |
|||
| Provider made home visits |
69.4% |
47.5% |
0.011c |
| Could have used home visits |
30.8% |
12.8% |
0.068c |
| Used paid housekeeper |
6.3% |
5.8% |
1.0c |
| Used 24-hr hotline |
12.2% |
5.7% |
0.20c |
| Could have used 24-hr hotline | 21.4% | 8.9% | 0.052c |
aResults are shown as mean (+/- SD) or % of total responders , along with p value for comparison of cases with SSIs to controls without SSIs. Abbreviations used: HRQOL, Health Related Quality of Life; SF-12, Medical Outcomes Study 12-Item Short-Form Health Survey; MCS, Mental Health Component Score of SF-12; PCS, Physical Health Component Score of SF-12.
bStudent t test.
cFisher exact test.
dWilcoxon rank-sum test.
