我有以下数据集
PatientName BVAID Rank TreatmentCode TreatmentID DoseID
Tim Stuart BVA-027 3 OP_TBC 1 1
Tim Stuart BVA-041 4 OP_TBC 1 1
Tim Stuart BVA-021 7 OP_TBC 1 1
Tim Stuart BVA-048 10 OP_TBC 1 1
Tim Stuart BVA-020 14 OP_TBC 1 1
Tim Stuart BVA-024 15 OP_TBC 1 1
Tim Stuart BVA-001 16 OP_TBC 1 1
Tim Stuart BVA-013 27 OP_TBC 1 1
Tim Stuart BVA-018 28 OP_TBC 1 1
Tim Stuart BVA-051 29 OP_TBC 1 1
Tim Stuart BVA-027 …