Respiratory: what evidence wins at the Board

For respiratory appeals, how often the Board granted the issue when the record held each kind of evidence, and how often when it did not. Measured from the decisions themselves; every number carries its fraction.

What this is computed from: evidence types detected in the full text of 1,907,778 public Board of Veterans' Appeals decisions (va.gov/vetapp), joined to the issue-level outcome. The tables use only single-issue decisions with a clean parse in complete crawl years (1993–2025) — 852,152 decisions — so each evidence flag attaches to exactly one decided issue. A split is shown only when both sides have at least 30 decisions. Data build: 2026-09-02.

Service connection for Respiratory (n = 13,555)

When the record had…Granted, with itGranted, without itDifferenceRemanded, with it
A medical source gave a positive nexus opinionEvidence in the record53% (726/1,378)28% (2,125/7,602)+25 pts17% (283/1,669)
Private physician opinion, letter or DBQEvidence in the record40% (878/2,201)29% (1,973/6,779)+11 pts16% (413/2,637)
Disability Benefits Questionnaire in the recordEvidence in the record38% (166/432)31% (2,685/8,548)+7 pts38% (261/696)
Third-party lay statements (spouse, buddy, employer)Evidence in the record30% (171/566)32% (2,680/8,414)-2 pts11% (74/647)
Service treatment records document the condition or injuryEvidence in the record29% (1,188/4,121)34% (1,663/4,859)-5 pts16% (825/5,017)
Service treatment records silent for the conditionEvidence in the record15% (502/3,334)42% (2,349/5,646)-27 pts8% (297/3,681)
Continuity of symptoms argued (38 CFR 3.303(b))Theory argued21% (617/2,920)37% (2,234/6,060)-16 pts7% (211/3,154)
Board hearing held or testimony takenProcedure33% (1,434/4,328)30% (1,417/4,652)+3 pts24% (1,457/5,998)
Social Security records in the fileEvidence in the record14% (49/359)33% (2,802/8,621)-19 pts14% (61/427)
Medical literature or treatise citedEvidence in the record28% (491/1,767)33% (2,360/7,213)-5 pts28% (695/2,468)
Functional loss / DeLuca factors argued (rating cases)Theory argued31% (153/495)32% (2,698/8,485)-1 pts12% (70/573)
Presumptive service connection discussedTheory argued29% (1,390/4,714)34% (1,461/4,266)-5 pts15% (809/5,577)
Secondary service connection (38 CFR 3.310) in playTheory argued26% (762/2,890)34% (2,089/6,090)-8 pts19% (688/3,659)
Combat service / 1154(b) in playTheory argued31% (212/694)32% (2,639/8,286)-1 pts14% (118/829)
A medical source gave a negative nexus opinionEvidence in the record32% (1,351/4,282)32% (1,500/4,698)-0 pts30% (1,810/6,109)
No nexus opinion of recordEvidence in the record9% (66/765)34% (2,785/8,215)-25 pts8% (66/846)
VA examination or VA medical opinion obtainedEvidence in the record31% (2,242/7,348)37% (609/1,632)-7 pts30% (3,159/10,629)
Board found a VA exam or opinion inadequateHow the Board read the record36% (644/1,794)31% (2,207/7,186)+5 pts52% (1,953/3,772)
Board found the VA exam or opinion adequateHow the Board read the record11% (77/699)33% (2,774/8,281)-22 pts1% (6/705)
Board found the veteran's statements credibleHow the Board read the record58% (402/692)30% (2,449/8,288)+29 pts7% (49/742)
Board found the veteran's statements not credible or inconsistentHow the Board read the record4% (10/243)33% (2,841/8,737)-28 pts3% (7/251)
Benefit of the doubt resolved in the veteran's favorHow the Board read the record83% (1,184/1,431)22% (1,667/7,549)+61 pts1% (15/1,448)
Preponderance of the evidence against / doctrine not applicableHow the Board read the record2% (99/4,084)56% (2,752/4,896)-54 pts0% (12/4,109)
Duty-to-assist error foundHow the Board read the record48% (57/120)32% (2,794/8,860)+16 pts87% (891/1,025)
Board ordered a new exam or addendum opinionProcedure31% (339/1,102)32% (2,512/7,878)-1 pts73% (3,163/4,307)
AMA favorable finding acknowledgedProcedure63% (391/620)29% (2,460/8,360)+34 pts38% (384/1,007)

"Granted" = share of issues decided on the merits (granted + denied); remands and dismissals are excluded from that fraction and shown separately. Fractions are the raw counts.

Increased rating for Respiratory (n = 3,115)

When the record had…Granted, with itGranted, without itDifferenceRemanded, with it
A medical source gave a positive nexus opinionEvidence in the record26% (10/38)18% (395/2,177)+8 pts21% (10/48)
Private physician opinion, letter or DBQEvidence in the record23% (58/250)18% (347/1,965)+6 pts9% (24/275)
Disability Benefits Questionnaire in the recordEvidence in the record22% (27/123)18% (378/2,092)+4 pts38% (77/200)
Third-party lay statements (spouse, buddy, employer)Evidence in the record32% (14/44)18% (391/2,171)+14 pts12% (6/50)
Service treatment records document the condition or injuryEvidence in the record17% (53/319)19% (352/1,896)-2 pts3% (11/334)
Service treatment records silent for the conditionEvidence in the record21% (8/38)18% (397/2,177)+3 pts7% (3/44)
Board hearing held or testimony takenProcedure20% (154/788)18% (251/1,427)+2 pts21% (224/1,064)
Social Security records in the fileEvidence in the record19% (10/53)18% (395/2,162)+1 pts10% (6/62)
Medical literature or treatise citedEvidence in the record13% (7/53)18% (398/2,162)-5 pts30% (24/81)
Functional loss / DeLuca factors argued (rating cases)Theory argued19% (42/226)18% (363/1,989)+0 pts13% (34/264)
Secondary service connection (38 CFR 3.310) in playTheory argued17% (68/405)19% (337/1,810)-2 pts10% (47/460)
Combat service / 1154(b) in playTheory argued18% (7/39)18% (398/2,176)-0 pts9% (4/47)
A medical source gave a negative nexus opinionEvidence in the record8% (10/118)19% (395/2,097)-10 pts15% (21/141)
VA examination or VA medical opinion obtainedEvidence in the record18% (371/2,084)26% (34/131)-8 pts21% (549/2,654)
Board found a VA exam or opinion inadequateHow the Board read the record21% (43/201)18% (362/2,014)+3 pts49% (200/405)
Board found the VA exam or opinion adequateHow the Board read the record15% (32/218)19% (373/1,997)-4 pts2% (4/222)
Board found the veteran's statements credibleHow the Board read the record42% (44/106)17% (361/2,109)+24 pts2% (2/110)
Benefit of the doubt resolved in the veteran's favorHow the Board read the record76% (113/149)14% (292/2,066)+62 pts1% (2/152)
Preponderance of the evidence against / doctrine not applicableHow the Board read the record5% (67/1,222)34% (338/993)-29 pts0% (0/1,226)
Duty-to-assist error foundHow the Board read the record35% (13/37)18% (392/2,178)+17 pts81% (167/205)
Board ordered a new exam or addendum opinionProcedure14% (26/182)19% (379/2,033)-4 pts73% (518/710)

"Granted" = share of issues decided on the merits (granted + denied); remands and dismissals are excluded from that fraction and shown separately. Fractions are the raw counts.

All Respiratory issues, every benefit type (n = 19,013)

When the record had…Granted, with itGranted, without itDifferenceRemanded, with it
A medical source gave a positive nexus opinionEvidence in the record52% (773/1,477)29% (3,319/11,480)+23 pts17% (300/1,785)
Private physician opinion, letter or DBQEvidence in the record39% (1,030/2,652)30% (3,062/10,305)+9 pts14% (453/3,132)
Disability Benefits Questionnaire in the recordEvidence in the record38% (241/628)31% (3,851/12,329)+7 pts37% (367/999)
Third-party lay statements (spouse, buddy, employer)Evidence in the record31% (199/640)32% (3,893/12,317)-1 pts11% (83/732)
Service treatment records document the condition or injuryEvidence in the record29% (1,332/4,673)33% (2,760/8,284)-5 pts15% (854/5,605)
Service treatment records silent for the conditionEvidence in the record15% (529/3,429)37% (3,563/9,528)-22 pts8% (305/3,790)
Continuity of symptoms argued (38 CFR 3.303(b))Theory argued21% (628/2,975)35% (3,464/9,982)-14 pts7% (215/3,215)
Board hearing held or testimony takenProcedure33% (1,916/5,782)30% (2,176/7,175)+3 pts23% (1,802/7,893)
Social Security records in the fileEvidence in the record17% (80/462)32% (4,012/12,495)-15 pts14% (74/547)
Vocational expert or assessmentEvidence in the record24% (15/62)32% (4,077/12,895)-7 pts9% (6/69)
Medical literature or treatise citedEvidence in the record28% (520/1,880)32% (3,572/11,077)-5 pts28% (747/2,637)
Functional loss / DeLuca factors argued (rating cases)Theory argued31% (264/845)32% (3,828/12,112)-0 pts12% (117/976)
Presumptive service connection discussedTheory argued30% (1,467/4,922)33% (2,625/8,035)-3 pts14% (825/5,809)
Secondary service connection (38 CFR 3.310) in playTheory argued27% (973/3,620)33% (3,119/9,337)-7 pts17% (776/4,493)
Combat service / 1154(b) in playTheory argued31% (232/760)32% (3,860/12,197)-1 pts14% (126/910)
A medical source gave a negative nexus opinionEvidence in the record31% (1,412/4,552)32% (2,680/8,405)-1 pts29% (1,868/6,439)
No nexus opinion of recordEvidence in the record9% (73/802)33% (4,019/12,155)-24 pts8% (72/890)
VA examination or VA medical opinion obtainedEvidence in the record31% (3,303/10,792)36% (789/2,165)-6 pts26% (3,948/14,903)
Board found a VA exam or opinion inadequateHow the Board read the record36% (777/2,146)31% (3,315/10,811)+6 pts51% (2,240/4,416)
Board found the VA exam or opinion adequateHow the Board read the record15% (149/1,013)33% (3,943/11,944)-18 pts1% (12/1,025)
Board found the veteran's statements credibleHow the Board read the record57% (496/866)30% (3,596/12,091)+28 pts6% (52/921)
Board found the veteran's statements not credible or inconsistentHow the Board read the record6% (17/272)32% (4,075/12,685)-26 pts5% (15/288)
Benefit of the doubt resolved in the veteran's favorHow the Board read the record83% (1,478/1,787)23% (2,614/11,170)+59 pts1% (18/1,809)
Preponderance of the evidence against / doctrine not applicableHow the Board read the record4% (248/5,842)54% (3,844/7,115)-50 pts0% (14/5,875)
Duty-to-assist error foundHow the Board read the record41% (93/227)31% (3,999/12,730)+10 pts82% (1,119/1,366)
Board ordered a new exam or addendum opinionProcedure30% (419/1,394)32% (3,673/11,563)-2 pts73% (3,908/5,357)
AMA favorable finding acknowledgedProcedure63% (415/661)30% (3,677/12,296)+33 pts37% (392/1,056)

"Granted" = share of issues decided on the merits (granted + denied); remands and dismissals are excluded from that fraction and shown separately. Fractions are the raw counts.

Reading these tables honestly

Association, not cause. A positive nexus opinion appears in the records of granted appeals far more often than in denied ones. That does not mean any letter wins; it means the Board grants when the evidence supports the claim, and a nexus opinion is how that support usually reaches the file.

Appeals are not claims. Every decision here is an appealed denial. Grant rates at the Board say nothing about the share of initial claims VA grants.

Findings are outcomes in disguise. Rows under "how the Board read the record" — credibility, benefit of the doubt, an inadequate exam — describe how the judge decided, not evidence to gather. They are shown because they say which arguments the Board actually reaches for.

Detection is by text pattern. Each evidence type is found by reading the decision for finding-shaped language with negation handling; precision was read on samples before publication and is stated per feature in the method notes below. Expect a few percent of misclassified rows, not zero.

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See also: Respiratory decisions · all conditions · outcome rates.