Please select the arm or intervention descriptions that belong to the clinical trial below.
Title: Dose-Response/Efficacy of Manipulation for Chronic LBP
Brief Summary: This study will determine the number of visits to a chiropractor for spinal manipulation, light massage, and ultrasound necessary for optimal relief of chronic low back pain. The study will also determine the effectiveness of spinal manipulation.


Options:
A: Arm Label: 1; Type: ACTIVE_COMPARATOR; Interventions: Behavioral: Brief Intervention | Arm Label: 2; Type: EXPERIMENTAL; Interventions: Behavioral: Cognitive Behavioural Therapy | Arm Label: 3; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Seal oil | Arm Label: 4; Type: PLACEBO_COMPARATOR; Interventions: Dietary Supplement: Soy oil | Intervention Type: BEHAVIORAL; Name: Brief Intervention; Assigned to Arm(s): 1 | Intervention Type: BEHAVIORAL; Name: Cognitive Behavioural Therapy; Assigned to Arm(s): 2 | Intervention Type: DIETARY_SUPPLEMENT; Name: Seal oil; Assigned to Arm(s): 3 | Intervention Type: DIETARY_SUPPLEMENT; Name: Soy oil; Assigned to Arm(s): 4
B: Arm Label: Saline, gravity flow; Type: ACTIVE_COMPARATOR; Interventions: Procedure: Saline Solution, Procedure: Gravity Flow Irrigation | Arm Label: Saline, Low Pressure; Type: ACTIVE_COMPARATOR; Interventions: Procedure: Saline Solution, Procedure: Low Pressure Irrigation | Arm Label: Saline, High Pressure; Type: ACTIVE_COMPARATOR; Interventions: Procedure: Saline Solution, Procedure: High Pressure | Arm Label: Soap, Gravity Flow; Type: ACTIVE_COMPARATOR; Interventions: Procedure: Soap solution, Procedure: Gravity Flow Irrigation | Arm Label: Soap, low pressure; Type: ACTIVE_COMPARATOR; Interventions: Procedure: Soap solution, Procedure: Low Pressure Irrigation | Arm Label: Soap, high pressure; Type: ACTIVE_COMPARATOR; Interventions: Procedure: Soap solution, Procedure: High Pressure | Intervention Type: PROCEDURE; Name: Saline Solution; Assigned to Arm(s): Saline, High Pressure, Saline, Low Pressure, Saline, gravity flow | Intervention Type: PROCEDURE; Name: Soap solution; Assigned to Arm(s): Soap, Gravity Flow, Soap, high pressure, Soap, low pressure | Intervention Type: PROCEDURE; Name: Gravity Flow Irrigation; Assigned to Arm(s): Saline, gravity flow, Soap, Gravity Flow | Intervention Type: PROCEDURE; Name: Low Pressure Irrigation; Assigned to Arm(s): Saline, Low Pressure, Soap, low pressure | Intervention Type: PROCEDURE; Name: High Pressure; Assigned to Arm(s): Saline, High Pressure, Soap, high pressure
C: Intervention Type: BEHAVIORAL; Name: Cognitive-behavioral rehabilitation; Assigned to Arm(s): N/A | Intervention Type: BEHAVIORAL; Name: Traditional primary care; Assigned to Arm(s): N/A
D: Arm Label: High dose manipulation; Type: EXPERIMENTAL; Interventions: Procedure: Spinal Manipulation, Procedure: Pulsed Ultrasound | Arm Label: Moderate dose manipulation; Type: EXPERIMENTAL; Interventions: Procedure: Spinal Manipulation, Procedure: Light Massage, Procedure: Pulsed Ultrasound | Arm Label: Low dose manipulation; Type: EXPERIMENTAL; Interventions: Procedure: Spinal Manipulation, Procedure: Light Massage, Procedure: Pulsed Ultrasound | Arm Label: High dose masssage; Type: OTHER; Interventions: Procedure: Light Massage, Procedure: Pulsed Ultrasound | Intervention Type: PROCEDURE; Name: Spinal Manipulation; Assigned to Arm(s): High dose manipulation, Low dose manipulation, Moderate dose manipulation | Intervention Type: PROCEDURE; Name: Light Massage; Assigned to Arm(s): High dose masssage, Low dose manipulation, Moderate dose manipulation | Intervention Type: PROCEDURE; Name: Pulsed Ultrasound; Assigned to Arm(s): High dose manipulation, High dose masssage, Low dose manipulation, Moderate dose manipulation

Answer: D