Report: Subcommittee on

Dose Reconstruction Reviews 

Board Meeting, Santa Fe

Dec. 13, 2017
Members: DRR Subcommittee 

David Kotelchuck (Chairperson)

Josie Beach

Bradley P. Clawson 

Wanda I. Munn

John W. Poston

David B. Richardson
Subcommittee Responsibilities

• The Subcommittee for Dose Reconstruction

Reviews is responsible for the review and

recommendation for Board action, of the

Board’s Technical Support Contractor’s audit

procedures (including revisions) related to

dose reconstructions conducted by the NIOSH

DCAS.
The Subcommittee will:

• Select cases for individual dose reconstruction 

review consistent with Board procedures, taking 

into consideration conflict of interest matters;

• Complete dose reconstruction case reviews (with 

the assistance of the Board’s contractor);

• Develop summary reports for the Board to advise 

the Secretary periodically on the scientific validity 

and quality of the dose reconstructions carried 

out by NIOSH.
Resolved and Open Findings by Set

Case Set 

for Review Tab Number

Number of 

Cases in Set Total Findings a Resolved Findings

Open/ 

Unresolved 

Findings

Percent Resolved

1st–5th 1–100 100 386 386 0 100%

6th 101–120 20 67 67 0 100%

7th 121–148 28 126 126 0 100%

8th 149–178 30 143 143 0 100%

9th 179–218 38 66 66 0 100%

10th 219–236 18 32 32 0 100%

11th 237–257 21 61 61 0 100%

12th 258–304 47 100 100 0 100%

13th 305–334 30 83 83 0 100%

14th 335–358 24 52 52 0 100%

15th 359–406 48 109 103 6 94%

16th 407–428 22 50 49 1 98%

18th 429–440 12 25 22 3 88%

19th 441–470 30 43 33 10 77%

21st 471–500 30 36 13 23 36%

Total: 498 1379 1336 43 97%
Current Status: Findings & Observations

for the 166 Cases in Sets 14-21

Case 

Set

Total 

Findings

Resolved 

Findings

Open/ 

Unresolved 

Findings

Total 

Observations

Resolved 

Observations

Open/ 

Unresolved 

Observations

14th 52 52 0 12 12 0

15th 109 103 6 44 44 0

16th 50 49 1 15 15 0

18th 25 22 3 6 5 1

19th 43 33 10 21 19 2

21st 36 13 23 47 26 21

Total: 315 272 43 145 121 24
Findings & Obs. Per Case

by Case Group

Case Group Finding 

per Case

Observations 

per Case

First Secty’s Report 

Sets 1-5 

(100 cases) 2009

3.98 Obs. not recorded 

at that time

Second Secty’s Rpt. 

Sets 6-13

(232 cases) 2016

2.70 0.89

Current Report 

Sets 14-21 

(166 cases) 2017

1.90 0.87
Sets 19 and 21: Categorization by Type

Sets 19 and 21

(Results after 

completion of 

9/28/17 mtg.) 

Type 1 

Issues

Type 2 

Issues

Open 31 18

In-Progress 2 5

Resolved 85 6

Total 118 (80%) 29 (20%)
Blinds Reviewed as of 12-13-17.

Part 1 of 2

Blind Cases Rvwd. 

(Identifiers Withheld) POC by SC&A POC by 

NIOSH/ORAU

Compensation 

Decision?

Initial Period

1. 49.35% 48.75% Agree

2. 48.00% 43.63% Agree

Set 17 Blinds

3. DR under review DR under review Not yet determined

4. 38.12% 48.27% Agree

5. 43.18% 45.27% Agree

6. 42.65% 47.51% Agree

7. 51.00% 51.39% Agree

8. 50.47% 50.46% Agree

Set 20 Blinds

9. 40.59% 41.17% Agree

10. 40.71% 42.49% Agree

11. . 36.43% 42.31% Agree

12. 43.78% 42.91% Agree

13. 51.05% 52.54% Agree

14. 49.48% 49.46% Agree
Blinds Reviewed as of 12-13-17.

Part 2 of 2

Blind Cases Rvwd. 

(Identifiers Withheld) POC by SC&A POC by 

NIOSH/ORAU

Compensation 

Decision?

Set 22 Blinds

15. 42.63% 46.19% Agree

16. 47.92% 48.08% Agree

17. 42.43% 46.44% Agree

18. 49.78% 46.60% Agree

19. 50.19% 50.08% Agree

20. 51.50% 50.57% Agree

Set 23 Blinds

21. 44.57% 46.10% Agree

22. 40.47% 48.64% Agree

23. 49.19% 47.31% Agree

24. 50.73% 50.83% Agree

25. 45.69% 48.44% Agree

26. 43.08% 44.33% Agree
Profile of Facilities For Which Blind 

Cases were Reviewed

Number of 

Blind Cases 

Reviewed at 

Facility

Facilities

4 Oak Ridge, Hanford, Rocky Flats

3 Nevada Test Sites

2 Fernald, Sandia, Pacific NW Laboratory

1 Ten Other Sites
Comparison of Absolute Values of 

PoC Differences for Blind Cases 

25 Blinds Reviewed: For 16 the NIOSH/ORAU PoC is 

larger; for 9 the SC&A PoC is larger. For each blind case, 

the PoC Difference = PoC(NIOSH/ORAU) – PoC(SC&A)

Average of ǀPoC Differencesǀ

= 2.43 ± 2.63

Median of ǀPoC Differencesǀ = 1.53

Conclusion: The Avg of the absolute difference 

of PoC values for blind cases calculated by 

NIOSH/ORAU and SC&A are compatible with 0.