Response Rate Table

Medicare HOS Survey Status Information1
REPORTING
INELIGIBLE
SAMPLE
UNITS
SIZE
SURVEYS3
(MAOs)2
287
279,135
7,196

COHORT

DATE
FIELDED

POPULATIO
N

Cohort 1 Baseline

May-98

M+CO

Cohort 1 Follow Up

Apr-00

M+CO

188

Cohort 2 Baseline

Mar-99

M+CO

312

COMPLETED
SURVEYS4

RESPONSE RATE5

167,096

61.40%

1,203

75,593

85.80%

301,184

8,829

194,378

66.50%

89,332

PACE

20

4,225

435

1,752

46.20%

EverCare

6

5,015

655

1,226

28.10%

Cohort 2 Follow Up

Jun-01

M+CO

160

88,468

1,539

73,015

84.00%

Cohort 3 Baseline

Apr-00

M+CO

306

298,883

7,662

208,655

71.60%

PACE

20

3,831

564

1,672

51.20%

Cohort 3 Follow Up

May-02

M+CO

146

87,091

1,523

65,992

77.10%

Cohort 4 Baseline

May-01

M+CO

197

190,523

6,041

126,255

68.40%

PACE

17

3,943

362

1,321

36.90%

Cohort 4 Follow Up

May-03

M+CO

152

71,549

951

55,480

78.60%

Cohort 5 Baseline

Apr-02

M+CO

177

171,504

5,963

106,168

64.10%

PACE

20

4,834

710

1,385

33.60%

Cohort 5 Follow Up

May-04

MA

153

74,562

1,265

58,417

80.00%

Cohort 6 Baseline

Apr-03

M+CO

163

161,409

5,579

100,669

64.60%

Cohort 6 Follow Up

May-05

MA

154

69,865

854

56,075

81.30%

Cohort 7 Baseline

Mar-04

MA

161

159,311

6,777

99,649

65.30%

Cohort 7 Follow Up

May-06

MA

151

70,022

1,084

57,214

83.00%

Cohort 8 Baseline

Apr-05

MA

164

162,902

6,966

101,588

65.10%

Cohort 8 Follow Up

May-07

MA

154

66,292

1,351

53,112

81.80%

Cohort 9 Baseline

Apr-06

MA

203

188,515

7,725

120,708

66.80%

Cohort 9 Follow Up

May-08

MA

187

77,669

819

62,875

81.80%

Cohort 10 Baseline

Apr-07

MA

286 

321,005 

19,273 

191,308 

63.4% 

Cohort 10 Follow Up

Apr-09

MA

268 

114,405 

2,026 

93,286 

83.0% 

Cohort 11 Baseline

Apr-08

MA

361

414,655

18,420

233,945

59.00%

Cohort 11 Follow Up

Apr-10

MA

330

114,733

901

96,106

84.40%

Cohort 12 Baseline

Apr-09

MA

424 

487,861 

26,162 

288,794 

62.6% 

Cohort 13 Baseline

Apr-10

MA

471 

546,931 

14,079 

337,249 

63.3% 

UPDATED August 2011

1 Over the course of time, the refinement of the HOS measure has resulted in changes to the definition of a "completed survey." The information in the
table provides a presentation of how a completed survey and response rate were calculated at the time of reporting for each of the baseline and follow
up cohorts. Given that the definition of a completed survey has evolved over time, this table should not be utilized for response rate comparisons across
the cohorts. If you are interested in comparative response rate information, please contact the Medicare HOS Information and Technical Support Line.
2 For the baseline cohorts, the reporting units represent the individual MAOs sampled for the survey. However for the follow up cohorts, the reporting
units have been adjusted to accommodate selected MAO consolidations and service area reductions at the time of performance measurement reporting
(which typically occurs in the year subsequent to the collection of the follow up data).
3 For the baseline cohorts, the ineligible beneficiaries meet one of the following criteria: deceased; not enrolled in the MAO; have an incorrect address
and phone number; or have a language barrier. For the follow up cohorts, the ineligible beneficiaries meet one of the following criteria: not enrolled in the
MAO; have an incorrect address and phone number; or have a language barrier.
4 In general, for Cohorts 1, 2, and 3 Baseline a completed survey is defined as a survey that has at least 80% of the questions answered. However,
beginning with Cohort 1 Follow Up and Cohort 4 Baseline, a completed survey is defined as a survey that can be used to calculate physical or mental
health summary scores.
5 Please note, ineligible beneficiaries are removed from the denominator in the response rate calculations. In other words, Response Rate = [Number of
Respondents/(Total Sample - Ineligibles)].