Table 4

Predictors of Costs Related to Influenza Complications and of Total Health Care Costs

Influenza-Related Costs

Total Costs

Mean

Median

Mean

Median

Gender

Female

$303

$69

$409

$107

Male

$294

$67

$380

$93

Age

0–4

$150

$62

$184

$83

5–14

$111

$61

$152

$69

15–24

$125

$69

$184

$100

25–34

$211

$68

$339

$103

35–44

$335

$77

$425

$118

45–54

$639

$80

$811

$141

55–64

$762

$93

$959

$182

65+

$944

$109

$1,408

$246

Prior/Concurrent Conditions

Prior Vaccination

Yes

$1,264

$89

$1,453

$177

No

$275

$68

$369

$100

Recently Preceding Complication or Comorbidity Diagnosis

Yes

$776

$87

$944

$126

No

$167

$66

$245

$93

Concurrent Dispensing of Amantadine or Rimantadine

Yes

$177

$92

$320

$127

No

$304

$67

$399

$100

Prior Influenza Episode

Yes

$187

$76

$263

$106

No

$306

$68

$404

$100

Quintile of 3-Month Preceding Health Care Cost

1:$0

$124

$62

$161

$71

2: >$0–$86

$104

$62

$140

$75

3:$87–$199

$132

$62

$178

$86

4: $200–452

$225

$75

$288

$114

5:$453+

$907

$100

$1,208

$211

Evidence of Medication Use and Prevalent Comorbid Conditions

Chronic Corticosteroid Use

Yes

$1,505

$263

$1,763

$376

No

$294

$68

$390

$100

Malignancy

Yes

$5,180

$165

$5,904

$400

No

$245

$68

$335

$100

Chronic Heart Disease

Yes

$2,866

$162

$3,295

$334

No

$248

$67

$338

$99

Chronic Lung Disease

Yes

$510

$86

$637

$128

No

$248

$66

$337

$94

Diabetes

Yes

$1,949

$124

$2,290

$290

No

$269

$68

$362

$100

Irwin et al. BMC Health Services Research 2001 1:8   doi:10.1186/1472-6963-1-8