1. Preliminary results from frequency tables and national quality reports
Agenda point 2.2
Guillaume Blanc
Lucian Agafitei
ESTAT F-4
11-12 May 2016
EHIS Task Force

2. Outline Unit non-response Mode of data collection Interview duration
Sample size
Use of proxy respondents
Item non-response
Problematic variables
Preliminary results from 20 national QRs
Preliminary results from frequency tables of 23 Member States
11-12 May 2016
EHIS Task Force

3. Unit non-response Around 50-60% in AT, BE, FI, FR (and LT?)
10% or less in CY, RO, SK
Subgroups with higher non-response:
Elderly (AT)
Men (FI)
Young population (FI, CZ)
Illiterate (FR)
Seriously sick (FR)
Non-French speakers (FR)
11-12 May 2016
EHIS Task Force

4. Mode of data collection
Face-to-face interviews
Telephone interviews
Self-administered questionnaire
Use of administrative data BE ✓ - BG CZ EL ES
FR(1) HR CY
LV(2) LT LU
NL(3) AT PL
PT(3) RO
SE(4) SK FI
11-12 May 2016
EHIS Task Force

5. Interview duration Face to face interview: 20'  45'
Telephone interview: 20'  24'
Self-administered questionnaire: 20'  41'
Reporting issues:
Not always indicated in the quality report
Not always presented separately by data collection mode
Not always clear if only EHIS part included
11-12 May 2016
EHIS Task Force

6. Minimum effective sample sizeMS
Achieved sample size
(1)
Effective sample size
(2)
Minimum effective sample size
(3)
Ratio (2) / (3)
(4) BE
9,951
4,692
6,500
0.72 BG
6,410
5,008
5,920
0.85 CZ
6,737
6,478
6,510
1.00 EL
8,223
4,691
6,667
0.70 ES
22,842 :
11,620 FR
15,756
11,847
13,110
0.90 HR
5,446 CY
4,958
4,948
4,095
1.21 LV
7,077
9,870
4,555
2.17 LT
5,205
6,426
4,850
1.32 LU
4,004
393?
4,000
0.10? HU NL
7,653
7,289
7,515
0.97 AT
15,771
10,729
6,050
1.77 PL
24,156
20,824
10,690
1.95 PT
18,204
6,515 RO
16,605
8,420 SE
6,200 SK
5,490
5,719
5,370
1.06 FI
6,226
5,330
Out of 12 MS (LU excluded), 5 seem not to comply with EHIS wave 2 regulation
11-12 May 2016
EHIS Task Force

7. Use of proxies for specific variables
Recommendation for not using a proxy for some variables not followed by 6 countries (in 3 countries allowed for all variables)
No proxies allowed in 5 countries
Proportion of proxy:
Less than 10 %: 11 MS
More than 10 %: 3 MS (maximum: 36%)
11-12 May 2016
EHIS Task Force

8. Impact of using proxies
Example:
Variable PC3 "Need to receive help or more help with self-care activities
Premise: 29% of the answers PROXY = 2 or 3
Result : % of Yes (weighted results)
PROXY = 1 or 2 or 3
PROXY = 1
PROXY = 2 or 3
54 %
48 %
66 %
11-12 May 2016
EHIS Task Force

9. Item non-response Huge differences between countries and variables
Examples:
PL2 (difficulty in seeing): 38% (EE)
PL4 (difficulty in hearing): 97% (EE)
PN2 (pain interference with work): 45-50% (CZ, EE)
PA1 (last time of vaccination against flu): 70-75% (BE, FI), 96% (EE)
UN1A (unmet need for health care in the past 12 months due to long waiting list): 49% (FR)
HHINCOME: more than 10% in 8 countries (max: 36% in HR)
Would be good to give an idea on overall item-non-response
11-12 May 2016
EHIS Task Force