Skip directly to search Skip directly to A to Z list Skip directly to navigation Skip directly to site content Skip directly to page options
CDC Home
Share
Compartir

Multiple Year (2006 ~ 2010) Child Asthma Call-back Survey Prevalence Tables - Technical Information

The Child Asthma Call-back survey (ACBS) requires use of the Behavioral Risk Factor Surveillance System (BRFSS) Random Child Selection Module and Child Asthma Prevalence Module during the BRFSS survey interview. A BRFSS survey respondent is eligible for the child ACBS if they report that the randomly selected child in the household has ever been diagnosed with asthma (lifetime asthma). The number of children with lifetime asthma identified during the BRFSS interview differs depending on the state BRFSS sample size and typically ranges from 200 to 1,000. Due to sample loss between the BRFSS interview and the asthma Call-back interview the number of completed child interviews for the ACBS ranged from 25 to 304 for the years from 2006 through 2010 (Table A). Effective in 2009, the state child data were not weighted and were not included in the annual public release file if there were fewer than 75 interview records for children due to concerns regarding the reliability of the sample weights when so few records were available. Because the ACBS annual sample size for children was limited even in states with a sufficient number to weight, the data for all states implementing the child ACBS from 2006 through 2010 were combined and reweighted. Combining records from all the years each state implemented the child ACBS provides more stable estimates of the characteristics of children with asthma in each state than those resulting from single years. Estimates of the characteristics of the child population with asthma from 35 states and the District of Columbia are included in the multiple-year child tables. Most states contributed four or five years of data to the multiple year file. Table A contains child ACBS sample sizes by year and state.

The annual child ACBS weighting process is based on the BRFSS final child weight for the randomly selected child (_CHILDWT). The sum of the BRFSS child weights for records reporting children with lifetime asthma is an estimate of the total population of children in the state with lifetime asthma. For the ACBS weight, the BRFSS child weight for the randomly selected child is adjusted for loss to sample between the BRFSS interview and the asthma Call-back interview. After adjusting for sample loss, demographic post stratification group (age/sex/race) adjustments are made to account for differential non-response. As an end result of the adjustment for sample loss and the post stratification adjustment, for each state the sum of the ACBS final weights for all ACBS child records is equal to the estimated total state population of children with lifetime asthma in the state.

The reweighting process for the multiple year data file used to produce the child estimates in tables 1 to 14 followed a procedure similar to that used on individual year data files. The multiple years of data were adjusted to represent an average individual year lifetime asthma population for each state. Based on the annual BRFSS child lifetime asthma population estimates, each year’s total estimated child lifetime asthma population was proportionately adjusted to represent that year’s relative contribution to multiple years of combined data. After the proportionate adjustment for the estimated lifetime asthma population, the weights were further adjusted by post-stratifying for differential non-response by demographic subgroups.

Additional information on the ACBS can be accessed at: http://www.cdc.gov/asthma/ACBS.htm and http://www.cdc.gov/brfss/acbs/index.htm.

 

Table A: Child Asthma Call-back Sample Size by Year and State

State

2006

2007

2008

2009

2010

Sample size

 

 

 

 

 

 

 

Alabama*

 

 

 

 

*

 

Alaska*

*

*

 

 

 

 

Arizona

51

52

57

*

38

198

Arkansas

 

 

 

 

 

 

California

92

80

73

*

32

277

Colorado

 

 

 

 

 

 

Connecticut

148

119

101

96

85

549

Delaware

 

 

 

 

 

 

District of Columbia

25

44

47

29

36

181

Florida

 

 

 

 

 

 

Georgia

128

149

88

103

77

545

Hawaii

141

188

148

116

104

697

Idaho

 

 

 

 

 

 

Illinois

 

45

69

77

67

258

Indiana

106

81

86

107

120

500

Iowa

67

86

92

63

66

374

Kansas

165

127

145

279

111

827

Kentucky

 

 

 

 

 

 

Louisiana

 

 

 

88

73

161

Maine

63

115

117

81

61

437

Maryland

142

117

134

134

97

624

Massachusetts

109

60

96

94

60

419

Michigan

89

129

185

131

146

680

Minnesota

 

 

 

 

 

 

Mississippi

 

112

 

 

 

112

Missouri

97

80

85

 

65

327

Montana

60

70

54

75

81

340

Nebraska

109

133

178

154

143

717

Nevada

 

 

 

 

 

 

New Hampshire

72

70

90

 

 

232

New Jersey

 

 

119

190

149

458

New Mexico

 

93

101

68

93

355

New York

102

100

110

92

39

443

North Carolina

 

 

 

 

 

 

North Dakota

 

 

49

54

57

160

Ohio

 

141

133

45

27

346

Oklahoma

 

109

100

36

90

335

Oregon

84

81

67

49

50

331

Pennsylvania

 

92

 

 

117

209

Rhode Island

 

 

91

78

68

237

South Carolina

 

 

 

 

 

 

South Dakota

 

 

 

 

 

 

Tennessee

 

 

 

 

 

 

Texas

107

127

169

169

208

780

Utah

 

117

105

168

183

573

Vermont

124

120

122

121

110

597

Virginia

 

 

70

72

 

142

Washington

 

 

 

304

290

594

West Virginia

 

85

71

71

47

274

Wisconsin

77

63

54

35

44

273

Wyoming

 

 

 

 

 

 

 

 

 

 

 

 

 

Total

2,158

2,985

3,206

3,179

3,034

14,562

* Child data were collected, but records could not be weighted due to sample issues

Top of Page

 

Data & Surveillance

Percents by Age, Sex, and Race, United States, 2012. Age: Child = 9.3%, Adult =  8.0%, Sex: Male = 7.0%, Female =  9.5%, Race/Ethnicity: White =  8.1%, Black =  11.9%, Hispanic =  7%. Source: National Health Interview Survey, National Center for Health Statistics, Centers for Disease Control and Prevention.

More

Contact Us:
  • Centers for Disease Control and Prevention
    1600 Clifton Rd
    Atlanta, GA 30333
  • 800-CDC-INFO
    (800-232-4636)
    TTY: (888) 232-6348
  • Contact CDC–INFO
  • Page last reviewed: September 30, 2012
  • Page last updated: September 30, 2012
USA.gov: The U.S. Government's Official Web PortalDepartment of Health and Human Services
Centers for Disease Control and Prevention   1600 Clifton Rd. Atlanta, GA 30333, USA
800-CDC-INFO (800-232-4636) TTY: (888) 232-6348 - Contact CDC-INFO