GI: what evidence wins at the Board

For gi 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 GI (n = 5,824)

When the record had…Granted, with itGranted, without itDifferenceRemanded, with it
A medical source gave a positive nexus opinionEvidence in the record63% (290/461)37% (1,170/3,160)+26 pts23% (139/603)
Private physician opinion, letter or DBQEvidence in the record53% (404/762)37% (1,056/2,859)+16 pts16% (153/928)
Disability Benefits Questionnaire in the recordEvidence in the record57% (106/186)39% (1,354/3,435)+18 pts43% (140/326)
Third-party lay statements (spouse, buddy, employer)Evidence in the record41% (123/303)40% (1,337/3,318)+0 pts12% (43/351)
Service treatment records document the condition or injuryEvidence in the record38% (690/1,811)43% (770/1,810)-4 pts18% (408/2,248)
Service treatment records silent for the conditionEvidence in the record24% (306/1,257)49% (1,154/2,364)-24 pts13% (196/1,482)
Continuity of symptoms argued (38 CFR 3.303(b))Theory argued31% (384/1,227)45% (1,076/2,394)-14 pts10% (141/1,378)
Board hearing held or testimony takenProcedure40% (671/1,698)41% (789/1,923)-2 pts25% (608/2,404)
Social Security records in the fileEvidence in the record25% (33/132)41% (1,427/3,489)-16 pts11% (17/151)
Medical literature or treatise citedEvidence in the record40% (278/700)40% (1,182/2,921)-1 pts36% (396/1,101)
Functional loss / DeLuca factors argued (rating cases)Theory argued41% (108/262)40% (1,352/3,359)+1 pts15% (46/312)
Presumptive service connection discussedTheory argued32% (555/1,720)48% (905/1,901)-15 pts14% (283/2,023)
Secondary service connection (38 CFR 3.310) in playTheory argued42% (613/1,476)39% (847/2,145)+2 pts33% (740/2,274)
Combat service / 1154(b) in playTheory argued41% (120/291)40% (1,340/3,330)+1 pts18% (67/371)
A medical source gave a negative nexus opinionEvidence in the record43% (746/1,733)38% (714/1,888)+5 pts35% (954/2,695)
No nexus opinion of recordEvidence in the record10% (28/278)43% (1,432/3,343)-33 pts10% (32/317)
VA examination or VA medical opinion obtainedEvidence in the record41% (1,226/3,015)39% (234/606)+2 pts34% (1,596/4,671)
Board found a VA exam or opinion inadequateHow the Board read the record53% (438/831)37% (1,022/2,790)+16 pts56% (1,074/1,917)
Board found the VA exam or opinion adequateHow the Board read the record22% (51/234)42% (1,409/3,387)-20 pts4% (10/244)
Board found the veteran's statements credibleHow the Board read the record77% (289/376)36% (1,171/3,245)+41 pts7% (27/403)
Board found the veteran's statements not credible or inconsistentHow the Board read the record7% (8/116)41% (1,452/3,505)-35 pts2% (2/118)
Benefit of the doubt resolved in the veteran's favorHow the Board read the record89% (616/689)29% (844/2,932)+61 pts1% (6/697)
Preponderance of the evidence against / doctrine not applicableHow the Board read the record3% (42/1,364)63% (1,418/2,257)-60 pts0% (2/1,369)
Duty-to-assist error foundHow the Board read the record66% (44/67)40% (1,416/3,554)+26 pts87% (507/581)
Board ordered a new exam or addendum opinionProcedure42% (228/547)40% (1,232/3,074)+2 pts74% (1,600/2,167)
AMA favorable finding acknowledgedProcedure76% (201/263)37% (1,259/3,358)+39 pts42% (190/454)

"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 GI (n = 3,274)

When the record had…Granted, with itGranted, without itDifferenceRemanded, with it
A medical source gave a positive nexus opinionEvidence in the record24% (8/33)28% (661/2,376)-4 pts8% (3/36)
Private physician opinion, letter or DBQEvidence in the record33% (113/341)27% (556/2,068)+6 pts13% (51/394)
Disability Benefits Questionnaire in the recordEvidence in the record46% (73/157)26% (596/2,252)+20 pts34% (82/240)
Third-party lay statements (spouse, buddy, employer)Evidence in the record31% (21/68)28% (648/2,341)+3 pts8% (6/76)
Service treatment records document the condition or injuryEvidence in the record18% (62/340)29% (607/2,069)-11 pts2% (8/352)
Service treatment records silent for the conditionEvidence in the record20% (9/46)28% (660/2,363)-8 pts2% (1/49)
Board hearing held or testimony takenProcedure28% (227/824)28% (442/1,585)-0 pts18% (186/1,060)
Social Security records in the fileEvidence in the record15% (8/55)28% (661/2,354)-14 pts11% (7/64)
Medical literature or treatise citedEvidence in the record30% (28/93)28% (641/2,316)+2 pts29% (38/131)
Functional loss / DeLuca factors argued (rating cases)Theory argued26% (109/416)28% (560/1,993)-2 pts12% (59/479)
Secondary service connection (38 CFR 3.310) in playTheory argued22% (119/545)30% (550/1,864)-8 pts8% (47/603)
Combat service / 1154(b) in playTheory argued12% (5/41)28% (664/2,368)-16 pts6% (3/49)
A medical source gave a negative nexus opinionEvidence in the record18% (24/132)28% (645/2,277)-10 pts15% (23/156)
VA examination or VA medical opinion obtainedEvidence in the record27% (611/2,244)35% (58/165)-8 pts20% (555/2,821)
Board found a VA exam or opinion inadequateHow the Board read the record30% (63/211)28% (606/2,198)+2 pts50% (214/427)
Board found the VA exam or opinion adequateHow the Board read the record19% (42/220)29% (627/2,189)-10 pts2% (4/224)
Board found the veteran's statements credibleHow the Board read the record55% (97/175)26% (572/2,234)+30 pts1% (2/177)
Board found the veteran's statements not credible or inconsistentHow the Board read the record12% (4/32)28% (665/2,377)-15 pts6% (2/34)
Benefit of the doubt resolved in the veteran's favorHow the Board read the record80% (200/251)22% (469/2,158)+58 pts1% (3/255)
Preponderance of the evidence against / doctrine not applicableHow the Board read the record8% (102/1,203)47% (567/1,206)-39 pts0% (2/1,208)
Duty-to-assist error foundHow the Board read the record41% (15/37)28% (654/2,372)+13 pts83% (184/222)
Board ordered a new exam or addendum opinionProcedure15% (29/198)29% (640/2,211)-14 pts70% (504/717)

"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 GI issues, every benefit type (n = 11,076)

When the record had…Granted, with itGranted, without itDifferenceRemanded, with it
A medical source gave a positive nexus opinionEvidence in the record61% (325/529)38% (2,714/7,107)+23 pts21% (144/676)
Private physician opinion, letter or DBQEvidence in the record50% (665/1,340)38% (2,374/6,296)+12 pts14% (219/1,575)
Disability Benefits Questionnaire in the recordEvidence in the record57% (250/437)39% (2,789/7,199)+18 pts36% (245/683)
Third-party lay statements (spouse, buddy, employer)Evidence in the record41% (169/416)40% (2,870/7,220)+1 pts11% (52/475)
Service treatment records document the condition or injuryEvidence in the record37% (885/2,404)41% (2,154/5,232)-4 pts15% (429/2,870)
Service treatment records silent for the conditionEvidence in the record25% (337/1,346)43% (2,702/6,290)-18 pts13% (198/1,576)
Continuity of symptoms argued (38 CFR 3.303(b))Theory argued32% (401/1,265)41% (2,638/6,371)-10 pts11% (150/1,426)
Board hearing held or testimony takenProcedure39% (1,215/3,126)40% (1,824/4,510)-2 pts21% (887/4,182)
Social Security records in the fileEvidence in the record26% (61/233)40% (2,978/7,403)-14 pts11% (30/269)
Vocational expert or assessmentEvidence in the record41% (24/58)40% (3,015/7,578)+2 pts5% (3/63)
Medical literature or treatise citedEvidence in the record39% (341/867)40% (2,698/6,769)-1 pts34% (449/1,321)
Functional loss / DeLuca factors argued (rating cases)Theory argued39% (362/918)40% (2,677/6,718)-0 pts12% (121/1,048)
Presumptive service connection discussedTheory argued33% (589/1,790)42% (2,450/5,846)-9 pts14% (293/2,104)
Secondary service connection (38 CFR 3.310) in playTheory argued38% (898/2,356)41% (2,141/5,280)-2 pts25% (815/3,246)
Combat service / 1154(b) in playTheory argued39% (140/360)40% (2,899/7,276)-1 pts16% (71/450)
A medical source gave a negative nexus opinionEvidence in the record41% (816/1,973)39% (2,223/5,663)+2 pts33% (997/2,980)
No nexus opinion of recordEvidence in the record11% (35/310)41% (3,004/7,326)-30 pts11% (39/358)
VA examination or VA medical opinion obtainedEvidence in the record40% (2,628/6,616)40% (411/1,020)-1 pts26% (2,339/9,052)
Board found a VA exam or opinion inadequateHow the Board read the record49% (577/1,183)38% (2,462/6,453)+11 pts53% (1,364/2,562)
Board found the VA exam or opinion adequateHow the Board read the record25% (136/547)41% (2,903/7,089)-16 pts3% (16/564)
Board found the veteran's statements credibleHow the Board read the record72% (473/658)37% (2,566/6,978)+35 pts4% (30/688)
Board found the veteran's statements not credible or inconsistentHow the Board read the record11% (18/167)40% (3,021/7,469)-30 pts3% (5/172)
Benefit of the doubt resolved in the veteran's favorHow the Board read the record88% (1,013/1,153)31% (2,026/6,483)+57 pts1% (10/1,166)
Preponderance of the evidence against / doctrine not applicableHow the Board read the record8% (243/3,061)61% (2,796/4,575)-53 pts0% (5/3,072)
Duty-to-assist error foundHow the Board read the record55% (91/165)39% (2,948/7,471)+16 pts81% (742/921)
Board ordered a new exam or addendum opinionProcedure36% (312/871)40% (2,727/6,765)-4 pts71% (2,277/3,189)
AMA favorable finding acknowledgedProcedure75% (230/307)38% (2,809/7,329)+37 pts39% (196/504)

"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: GI decisions · all conditions · outcome rates.