Emergency department subset A total of 1,810 records with a poisoning ICD-9-CM diagnosis or E-code of poisoning were extracted from the 1997–2001 NHAMCS emergency department data subset, yielding an estimate of 1,428,000 visits (Table 3-6). This represents 1.5 percent of all

TABLE 3-6 Annual Number and Rates of Emergency Department Visits as Confirmed by ICD-9-CM Codes, National Hospital Ambulatory Medical Care Survey (NHAMCS) Emergency Department File, 1997–2001

 

Sample Number

Number of Visits (thousands)

 

Total Population (millions)a

Poisoning-Related Visits per 100,000 Persons

Total

1,810

1,428

 

271.56

530

Gender

Male

853

665

 

132.52

500

Female

957

763

 

139.05

550

Age

Under 18

432

352

 

72.02

490

18–64

1,240

975

 

167.09

580

65 and over

138

100

 

32.45

310

Race

White

1,383

1,121

 

215.97

520

Black

378

274

 

33.11

830

Other

49

33

 

21.91

150

Region

Northeast

485

286

 

52.44

540

Midwest

368

321

 

66.46

480

South

564

510

 

96.68

530

West

393

311

 

55.99

560

Discharge status (percentage of total)

 

Referred to another physician or clinic

722

557

(39)

271.56

200

Admitted to hospital

355

256

(18)

271.56

90

Transferred to other facility

156

115

(8)

271.56

40

Reason/symptoms included poisoning

730

570

(40)

271.56

210

Poison E-code included (percentage of total)

1,410

1,089

(76)

271.56

400

Poison diagnosis code included

1,223

1,009

(71)

271.56

370

aEstimated from NHIS 1997–2001 person files.

SOURCE: Cisternas (2003).



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