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Table 4 Associations between socio-demographic factors and community-onset sepsis: cohort and case-control studies

From: Community-onset sepsis and its public health burden: a systematic review

Study ID country

Geographic scope and setting

Study design Sample size N

Type of sepsis

Risk factor (reference and exposure groups)

Summary measure of association (exposure vs. reference group) 95% CI

Covariates adjusted for

Methodological quality

Age (years)

Ginde 2013 [47] The USA

Nationwide

Retrospective cohort study

Severe

<65

Ref 1.00

sex and race/ethnicity

Low quality

ED

≥65

OR=1.00 (0.52, 1.90)

N (cohort baseline – all ED visits)= 87,500,000

Wang 2012 [36] REGARDS-sepsis cohort study β2012-2015 The USA

Nationwide

Prospective cohort study

Non-severe

45-54

Ref 1.00

Not adjusted (crude)

Acceptable quality

 

Hospital ward, ED

55-64

HRR=1.44 (1.04, 2.00)

N (cohort baseline)=30,239

65-74

HRR=2.29 (1.66, 3.16)

75≤

HRR=3.87 (2.80, 5.35)

Henriksen 2015b [43] Denmark

City/municipal

Case-control study

All

15-64

Ref 1.00

Sex, alcoholism- related conditions, comorbidity, and immunosuppression

Low quality

ED, ICU

N (cases)=1,713

65-84

OR=3.09 (2.75, 3.48)

N (controls)=227,054

≥85

OR=6.02 (5.09, 7.12)

Non-severe

15-64

Ref 1.00

See above

65-84

OR=2.15 (1.78, 2.60)

≥85

OR=3.66 (2.74, 4.88)

Severe

15-64

Ref 1.00

See above

65-84

OR=3.93 (3.39, 4.56)

≥85

OR=7.84 (6.38, 9.63)

Sex

Ginde 2013 [47] The USA

Nationwide

Retrospective cohort study

Severe

Female

Ref 1.00

Age and race/ethnicity

Low quality

ED

Male

OR=1.13 (0.62, 2.00)

N (cohort baseline– all ED visits)= 87,500,000

Wang 2012 [36] REGARDS-sepsis cohort study β 2012-2015 The USA

Nationwide Hospital ward, ED

Prospective cohort study analysis

Non-severe

Female

Ref 1.00

Not adjusted (crude)

Acceptable quality

 

N (cohort baseline)=30,239

Male

HRR=1.30 (1.15, 1.48)

Henriksen 2015b [43] Denmark

City/municipal

Case-control study

All

Female

Ref 1.00

Age, alcoholism- related conditions, comorbidity, and immunosuppression

Low quality

ED, ICU

N (cases)=1,713

Male

OR=1.01 (0.91, 1.11)

N (controls)=227,054

Non-severe

Female

Ref 1.00

See above

Male

OR=0.89 (0.76, 1.05)

Severe

Female

Ref 1.00

See above

Male

OR=1.07 (0.95, 1.22)

Race/ethnicity

Ginde 2013 [47] The USA

Nationwide

Retrospective cohort study

Severe

Non-Hispanic White

Ref 1.00

Age and sex

Low quality

Non-Hispanic Black

OR=1.30 (0.62, 2.60)

ED

N (cohort baseline– all ED visits)= 87,500,000

Hispanic

OR=0.63 (0.23, 1.70)

Other

OR=2.40 (0.87, 6.50)

Wang 2012 [36] REGARDS-sepsis cohort study β 2012-2015 The USA

Nationwide

Prospective cohort study analysis

Non-severe

Black

Ref 1.00

sex, age, geographic region, education level, income, tobacco, alcohol use, baseline chronic medical conditions, biomarkers

Acceptable quality

 

Hospital ward, ED

N (cohort baseline)=30,239

White

HRR=1.56 (1.38, 1.75)

Education

Wang 2012 [36] REGARDS-sepsis cohort study β 2012-2015 The USA

Nationwide

Prospective cohort study analysis

Non-severe

≥College

Ref 1.00

Not adjusted (crude)

Acceptable quality

 

Hospital ward, ED

N (cohort baseline)=30,239

Some college

HRR=1.41 (1.19, 1.67)

High school

HRR=1.52 (1.28, 1.80)

<High school

HRR=1.88 (1.54, 2.29)

Nursing home residence

Ginde 2013 [47] The USA

Nationwide

Retrospective cohort study

Severe

No

Ref 1.00

Age, sex and race/ethnicity

Low quality

ED

Yes

OR=2.60 (1.20, 5.60)

N (cohort baseline)= 87,500,000

  1. NR not reported, ICU intensive care unit, HDU high dependence unit; ED emergency department, 95% CI 95 percent confidence interval, REGARDS Reasons for Geographic And Racial Differences in Stroke, Ref reference group, OR odds ratio, HRR hazard rate ratio, NSAID non-steroidal anti-inflammatory drug, CKD chronic kidney disease, IL-6 interleukin-6, TNF-α tumor necrosis factor alpha, ICAM intercellular adhesion molecule, VCAM vascular cell adhesion molecule, PSS perceived stress scale, SD standard deviation, Q1-4 dietary intake quartile scores
  2. β REGARDS-sepsis cohort study publications [32–38, 40, 41]