Proportions of discs with EAF for different pain responses by disc levels, sex, and patient age
| Disc/Patient Characteristics | Discography Pain Response | |||
|---|---|---|---|---|
| Severe Pain | Negative for Pain (EAF %) | Overall (EAF %) | ||
| Concordant Pain (EAF %) | Nonconcordant Pain (EAF %) | |||
| Overall | 22/36 (61%) | 10/14 (71%) | 7/50 (14%) | 39/100 (39%) |
| Disc level | ||||
| L1–2 to L2–3a | 2/3 (67%) | 0/1 (0%) | 1/9 (11%) | 3/13 (23%) |
| L3–4 | 4/11 (36%) | 4/5 (80%) | 4/28 (14%) | 12/44 (27%) |
| L4–5 | 14/15 (93%) | 3/3 (100%) | 2/10 (20%) | 19/28 (68%) |
| L5–S1 | 2/7 (29%) | 3/5 (60%) | 0/3 (0%) | 5/15 (33%) |
| Sex | ||||
| Female | 16/23 (70%) | 5/7 (71%) | 5/29 (17%) | 26/59 (44%) |
| Male | 6/13 (46%) | 5/7 (71%) | 2/21 (10%) | 13/41 (32%) |
| Age | ||||
| Younger than 41 yr | 16/24 (67%) | 7/9 (78%) | 6/25 (24%) | 29/58 (50%) |
| 41 yr or older | 6/12 (50%) | 3/5 (60%) | 1/25 (4%) | 10/42 (24%) |
↵a There was a single disc at L1–2 that did not have an EAF or pain on provocation.