Case Fatality and Adverse Outcomes Are Reduced in Pregnant Women With Severe Sepsis or Septic Shock Compared With Age-Matched Comorbid-Matched Nonpregnant Women
Bibliographic record
Abstract
OBJECTIVES: Case fatality in pregnancy-associated severe sepsis or septic shock appears reduced compared with nonpregnant women with severe sepsis or septic shock. It remains unclear if this difference is due to pregnancy or better baseline health status, among others. Our study compared adverse outcomes of pregnancy-associated severe sepsis or septic shock with nonpregnant women with severe sepsis or septic shock while controlling for age and chronic comorbidities. DESIGN: Retrospective cohort study. SETTING: Nationwide Inpatient Sample, a stratified sample of 20% acute care hospital admissions in the United States. Each entry includes patient and hospital characteristics as well as International Classification of Diseases, 9th revision, Clinical Modification, diagnoses and procedures. SUBJECTS: Women of childbearing age (15-44 yr) with severe sepsis or septic shock-related hospitalizations during 1998-2012 identified using International Classification of Diseases, 9th revision, Clinical Modification, codes. OUTCOMES: Case fatality, hospital length of stay, length of stay until death, number of organ failures, rates of mechanical ventilation, and hemodialysis were compared in women according to pregnancy status, controlling for age, and chronic comorbidities. MEASUREMENTS AND MAIN RESULTS: We identified 5,968 pregnancy-associated severe sepsis or septic shock and 85,240 nonpregnant women with severe sepsis or septic shock hospitalizations. Crude case fatality of pregnancy-associated severe sepsis or septic shock (9.6%) was lower than nonpregnant women with severe sepsis or septic shock (16.8%). The rate ratio for case fatality adjusted for socioeconomic status and race was 0.57 (95% CI, 0.52-0.62) while sequential adjustments for age and chronic comorbidities did not eliminate the association (rate ratio, 0.62 [95% CI, 0.57-0.68]) and 0.63 [95% CI, 0.57-0.68], respectively). Pregnancy-associated severe sepsis or septic shock was associated with shorter hospital length of stay (-0.83 d [95% CI, -1.32 to -0.34 d]), longer length of stay until death (2.61 d; [95% CI, 1.28-3.94 d]), and fewer organ failures (rate ratio, 0.95 [95% CI, 0.94-0.97]). CONCLUSIONS: Case fatality and adverse outcomes are reduced in women with pregnancy-associated severe sepsis or septic shock compared with nonpregnant women with severe sepsis or septic shock, and this is not explained by differences in age or chronic comorbidities alone. A less severe presentation of sepsis or protective effect of pregnancy may account for the difference observed with pregnancy-associated severe sepsis or septic shock.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.004 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".