A 2011 article published in the Journal of Substance Abuse Treatment reports the results of a randomized clinical trialdesigned to assess the effects of acupuncture on anxiety related to withdrawal from psychoactive drugs. As per the abstract: (you may recall this article from Homework 1 of Statistical Concepts 1 \"Auricular acupuncture (AA) is a widely accepted treatment option for substance abuse that is used in more than 700 treatment centers worldwide. Despite claims of perceived clinical benefits by patients and treatment staff, research efforts have failed to substantiate purported benefits, and the mechanism(s) by which AA serves in the treatment of addiction remain inconclusive. Numerous studies have shown AA to be an effective treatment for perioperative anxiety. In this study, we hypothesize that AA reduces the anxiety associated with withdrawal from psychoactive drugs. The study used a randomized, controlled design and included a sample of 101 patients recruited from an addiction treatment service. Subjects were assigned to one of three treatment groups (National Acupuncture Detoxification Association [NADA] AA, AA at sham points, or treatment setting control) and were instructed to attend treatment sessions for 3 days. The primary outcome measure state anxiety was assessed using a pretestposttest treatment design.\"The following boxplots (Figure 4 in the article) show the main results from this study: (higher anxiety scores indicate higher anxiety) NADA Sham Relaxation 8 8 8 . . . ..... ..mmm... ... 8 8 . . . ... 8 State Anxiety score State Anxiety score State Anxiety score 8- 8- 8 & & Before Session After Session Before Session After Session Before Session After Session Seesinn Timing Sassinn Timing Sacsinn Timing- What additonal graphics would you need to see in order to ascertain whether the relationship between anxiety scores and acupuncture (as compared to relaxation therapy) is potentially modified by sex? a. The boxplots of the before and after treatment anxiety distributions for both the acupuncture and relaxtion group, after the distributions have been adjusted for sex differences between the acupuncture and relaxation groups. b. The before and after treatment anxiety score distributions for the acupuncture and relaxation groups, presented separately by sex. c. None. The graphics given with this exercise are sufcient to assess effect modification by sex