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Low back pain grade
| Pain grade | Interpretation |
|---|---|
| 0 | No pain |
| 1 | Low back pain without disability |
| 2 | Low back pain with disability without absencea |
| 3 | Low back pain with disability with absence for <4 daysb |
| 4 | Low back pain with disability with absence for ≥4 daysc |
aAbsence from social activity, i.e., work or school
bConsecutive absence for <4 days
cConsecutive absence for ≥4 days
