What is the SOII?

Report
Intramural and extramural
research/improvements
Beth Rogers
Council of State and Territorial Epidemiologists
Counting Work-related Injuries and Illnesses: Taking Steps
to Close the Gaps II
April 17-18, 2013
Washington, D.C.
Overview
Background
 SOII history and outputs
 Research goals and results
 Recommendations and further research

2
Background
1970s: Began Survey of Occupational
Injuries and Illnesses (SOII); periodic
user concerns led to ROSH and expanded
scope
 Mid 2000s: Micro-record comparisons of
SOII and workers’ comp (WC) report
undercount:

Rosenman et al. (2006)
Boden and Ozonoff (2008)

2008 and 2010: BLS reports on research
3
Congressional Action
Hearings
 Additions to appropriations

BLS ($1 million for SOII undercount
research)
Occupational Safety and Health
Administration (OSHA)
National Institute for Occupational Safety
and Health (NIOSH)

Request for GAO study of the accuracy of
recordkeeping on employers’ OSHA logs
4
What is the SOII?
Mandatory annual establishment survey
 Counts OSHA-recordable nonfatal
workplace injuries and illnesses
 Based on OSHA records employers keep
during the year

Includes employers not otherwise required
to keep records

Collected soon after end of the year
5
Unique aspects of the SOII
Definitions come from OSHA
 Consistent definitions and procedures
across states
 Worker injuries and illnesses are
infrequent events

Rate 3.5 cases per 100 full-time equivalent
workers
Many employers report zero cases
6
SOII output

Annual establishment totals and rates by
industry
“Summary” estimates

Case circumstances and worker
characteristics for cases requiring days
away from work
“Case and demographic” estimates

Microdata undercount studies have been
based on the latter
7
Criticisms of SOII
Limited data on workplace illnesses
 Restricted survey scope
 Cases reported elsewhere but not in
SOII
 Cases reported neither in SOII nor in
other systems

8
Defining the undercount
SOII undercount: Failure to capture
cases that are within the scope of the
survey
 Total public burden undercount: Failure
to report any occupational injury or
illness


Focus of research – SOII undercount
9
Initial undercount
research
In 2008, BLS initiated three types of
research projects: matching, employer
interviews and multisource
 Conclusion of initial undercount research
 2012 SOII Undercount Research
Meeting
 Results and recommendations

10
Other research

Nestoriak and Pierce
Compared SOII and WC data in KY and
WI
Explored three matching strategies
– Macro
– Micro
– Hybrid
Implications for improving SOII
11
WC-SOII matching
Match and analyze microdata (KY, WA,
CA)
 Robust evidence of an undercount but
measuring the magnitude is difficult
 40%-70% SOII capture rate
 Issues matching administrative and
survey data

Issues with WC data
Issues with the SOII
12
Employer interviews
Explore possible reasons for differences
in reporting cases on OSHA logs, SOII,
and State WC claims (KY, WA)
 Loosely structured questionnaire, in
person visits
 Interviews provide qualitative context
but no quantitative information

13
Multisource enumeration
Using multiple data sources to
enumerate certain case types (CA, MA,
WA)
 Data from emergency department visits,
hospital discharges, WC, SOII, others
 Value in multisource for State-based
surveillance and topical research
 National multisource surveillance is not
feasible (cost and consistent data
availability)

14
Reasons for the
discrepancy
SOII appears to capture everything on
the OSHA log
 Types of cases more likely to be missed
by SOII
 Much of undercount still unexplained

15
Consensus
recommendations
Expand SOII data collection
 Improve coding consistency of SOII
 Work with OSHA to enhance
recordkeeping
 SOII supplements (CPS supplement)
 Future research ideas (undercount
trends, variations by state, employer
attributes and practices)

16
Second round of research

Interview a large number of employers
in MN, NY, OR, WA
Goal: Quantitative measures of employer
characteristics, recordkeeping practices

Match WC-SOII for 12 years in WA
Goal: Analyze undercount trends over time

Pilot test auto-coding of SOII data
Goal: Improve classification consistency
17
Other recommended
enhancements

Publish hospitalization data from OSHA
logs
Goal: Improve collection/reporting of these
data

Collect and publish case data for DJTR
Goal: Pilot test collection, estimation, and
dissemination
Goal: Evaluate effect on current DAFW
case data
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Future research ideas
Expand auto-coding
 Follow-back studies to capture injury
and illness updates and incidents
occurring late in the year
 Expand collection of DJTR case detail
 Explore ways to improve employer
recordkeeping

19
Contact Information
Beth Rogers
Occupational Safety and Health Statistics
www.bls.gov/iif
202-691-5098
[email protected]

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