Arthritis: what evidence wins at the Board

For arthritis 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 Arthritis (n = 1,097)

When the record had…Granted, with itGranted, without itDifferenceRemanded, with it
A medical source gave a positive nexus opinionEvidence in the record52% (48/92)23% (167/741)+30 pts10% (10/103)
Private physician opinion, letter or DBQEvidence in the record37% (68/184)23% (147/649)+14 pts9% (19/206)
Third-party lay statements (spouse, buddy, employer)Evidence in the record24% (20/84)26% (195/749)-2 pts9% (8/94)
Service treatment records document the condition or injuryEvidence in the record30% (120/398)22% (95/435)+8 pts10% (47/458)
Service treatment records silent for the conditionEvidence in the record13% (48/362)35% (167/471)-22 pts3% (12/383)
Continuity of symptoms argued (38 CFR 3.303(b))Theory argued20% (77/379)30% (138/454)-10 pts6% (25/409)
Board hearing held or testimony takenProcedure28% (112/404)24% (103/429)+4 pts14% (68/492)
Social Security records in the fileEvidence in the record18% (9/50)26% (206/783)-8 pts8% (5/60)
Medical literature or treatise citedEvidence in the record27% (34/125)26% (181/708)+2 pts23% (38/163)
Functional loss / DeLuca factors argued (rating cases)Theory argued30% (24/80)25% (191/753)+5 pts11% (10/91)
Presumptive service connection discussedTheory argued18% (108/590)44% (107/243)-26 pts5% (30/632)
Secondary service connection (38 CFR 3.310) in playTheory argued25% (80/320)26% (135/513)-1 pts13% (48/378)
Combat service / 1154(b) in playTheory argued26% (22/84)26% (193/749)+0 pts14% (14/103)
A medical source gave a negative nexus opinionEvidence in the record28% (86/306)24% (129/527)+4 pts20% (79/387)
No nexus opinion of recordEvidence in the record7% (6/81)28% (209/752)-20 pts4% (4/90)
VA examination or VA medical opinion obtainedEvidence in the record27% (188/686)18% (27/147)+9 pts19% (165/868)
Board found a VA exam or opinion inadequateHow the Board read the record34% (47/140)24% (168/693)+9 pts39% (92/234)
Board found the VA exam or opinion adequateHow the Board read the record7% (4/54)27% (211/779)-20 pts2% (1/55)
Board found the veteran's statements credibleHow the Board read the record58% (32/55)24% (183/778)+35 pts7% (4/60)
Benefit of the doubt resolved in the veteran's favorHow the Board read the record83% (97/117)16% (118/716)+66 pts0% (0/117)
Preponderance of the evidence against / doctrine not applicableHow the Board read the record3% (12/368)44% (203/465)-40 pts0% (1/372)
Board ordered a new exam or addendum opinionProcedure28% (36/127)25% (179/706)+3 pts54% (157/290)

"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 Arthritis (n = 376)

When the record had…Granted, with itGranted, without itDifferenceRemanded, with it
Private physician opinion, letter or DBQEvidence in the record9% (3/35)14% (38/265)-6 pts5% (2/37)
Service treatment records document the condition or injuryEvidence in the record21% (13/62)12% (28/238)+9 pts2% (1/64)
Board hearing held or testimony takenProcedure14% (17/124)14% (24/176)+0 pts16% (25/154)
Secondary service connection (38 CFR 3.310) in playTheory argued8% (8/100)16% (33/200)-8 pts6% (6/108)
Board found a VA exam or opinion inadequateHow the Board read the record16% (5/32)13% (36/268)+2 pts43% (24/56)
Board found the VA exam or opinion adequateHow the Board read the record6% (2/33)15% (39/267)-9 pts0% (0/33)
Preponderance of the evidence against / doctrine not applicableHow the Board read the record4% (7/178)28% (34/122)-24 pts0% (0/179)
Board ordered a new exam or addendum opinionProcedure16% (6/38)13% (35/262)+2 pts55% (47/86)

"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 Arthritis issues, every benefit type (n = 1,689)

When the record had…Granted, with itGranted, without itDifferenceRemanded, with it
A medical source gave a positive nexus opinionEvidence in the record50% (50/100)24% (291/1,212)+26 pts10% (11/112)
Private physician opinion, letter or DBQEvidence in the record34% (83/242)24% (258/1,070)+10 pts10% (27/274)
Third-party lay statements (spouse, buddy, employer)Evidence in the record22% (21/97)26% (320/1,215)-5 pts8% (9/108)
Service treatment records document the condition or injuryEvidence in the record31% (156/501)23% (185/811)+8 pts9% (50/566)
Service treatment records silent for the conditionEvidence in the record13% (50/374)31% (291/938)-18 pts4% (15/400)
Continuity of symptoms argued (38 CFR 3.303(b))Theory argued20% (78/382)28% (263/930)-8 pts6% (26/413)
Board hearing held or testimony takenProcedure28% (171/611)24% (170/701)+4 pts14% (101/740)
Social Security records in the fileEvidence in the record18% (14/80)27% (327/1,232)-9 pts6% (5/90)
Medical literature or treatise citedEvidence in the record28% (39/138)26% (302/1,174)+3 pts22% (39/177)
Functional loss / DeLuca factors argued (rating cases)Theory argued27% (134/490)25% (207/822)+2 pts10% (53/545)
Presumptive service connection discussedTheory argued18% (110/599)32% (231/713)-14 pts5% (32/647)
Secondary service connection (38 CFR 3.310) in playTheory argued24% (114/473)27% (227/839)-3 pts11% (59/544)
Combat service / 1154(b) in playTheory argued24% (22/90)26% (319/1,222)-2 pts15% (17/112)
A medical source gave a negative nexus opinionEvidence in the record28% (95/342)25% (246/970)+2 pts20% (84/428)
No nexus opinion of recordEvidence in the record7% (6/84)27% (335/1,228)-20 pts4% (4/93)
VA examination or VA medical opinion obtainedEvidence in the record27% (303/1,125)20% (38/187)+7 pts17% (238/1,387)
Board found a VA exam or opinion inadequateHow the Board read the record31% (58/188)25% (283/1,124)+6 pts39% (123/313)
Board found the VA exam or opinion adequateHow the Board read the record13% (13/98)27% (328/1,214)-14 pts1% (1/100)
Board found the veteran's statements credibleHow the Board read the record56% (38/68)24% (303/1,244)+32 pts5% (4/73)
Benefit of the doubt resolved in the veteran's favorHow the Board read the record81% (122/150)19% (219/1,162)+62 pts0% (0/150)
Preponderance of the evidence against / doctrine not applicableHow the Board read the record5% (31/608)44% (310/704)-39 pts0% (1/615)
Board ordered a new exam or addendum opinionProcedure28% (52/184)26% (289/1,128)+3 pts54% (220/411)

"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.

Which of these is missing from your file?

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