Assessing Peer Support for Physical Activity in Women With HIV and Hypertension

Measure of participants who withdraw from the behavioral trial in the intervention and the control groups to determine feasibility of enrolling and retaining individuals in the trial. Approximately 15% attrition is expected in a behavioral clinical trial. Higher levels of attrition relate to lower feasibility.

Participant satisfaction with the intervention: Treatment Satisfaction Questionnaire adapted for behavioral treatment. The measure includes 11 items asked on a Likert-type scale from 1=Extremely Dissatisfied to 7=Extremely Satisfied, with 3 items asked on a 1-5 scale. 1 item will be removed that asks about medication side effects. Scores can range from 10 to 64. Higher scores mean higher satisfaction with the treatment/intervention.

The Brief Patient Experiences with Treatment and Self Management will be used. The scale includes 32 items total. Most items use a 5-point Likert-type scale from 1=very easy to 5=very difficult. Some items use a 5-point Likert scale (agreement). And some use a Likert-type frequency/intensity measure from 1=not at all to 5=very much. Does not apply=0. Total scores range from 0 to 150. Higher scores mean higher treatment burden.

Home blood pressure readings taken x3 and averaged.

7-day accelerometer observation of daily physical activity

Time and intensity of physical activity via the International Physical Activity Questionnaire - Short Form (IPAQ-SF) which are then computed to a continuous score of MET (metabolic equivalents)-minutes per week. Computed as follows: Total PA METmin/week=[(3.3*walking minutes*walking days)+(4.0*moderate activity minutes*moderate activity days)+(8.0*vigorous activity minutes*vigorous activity days)]. Higher scores mean greater physical activity.

Confidence to engage in regular physical activity will be measured using the Exercise Self Efficacy Scale. A total of 9 items are asked using a scale from 0=not at all confident to 10=completely confident. Scores range from 0-90. Higher scores mean higher self efficacy.

Physical activity enjoyment scale will be used. The scale has 18 items and each item is asked on a 1 to 7 scale. Scores may range from 18-126. Higher scores mean higher enjoyment and perceived positive outcomes from exercise/physical activity.

Social support for exercise behaviors scale will be used that includes 10 items asked on a scale from 1=none to 5=very often, there is also an option for does not apply. Scores range from 10-50. Higher scores mean more social support for physical activity.

Medical outcomes study social support scale will be used to assess global social support. The scale includes 19 items and the overall support index is calculated by taking the mean of all of the items resulting in a range from 1-5. Scores can be transformed to a 0-100 score by the following equation: 100*((observed score-minimum possible score)/(maximum possible score-minimum possible score)). Higher scores mean greater social support.

The Short Form Health Survey-12 (SF-12) will be used to assess Health related quality of life (HRQoL) which asks about physical and emotional health in the past 4 weeks using 12 items. In scoring, all items are coded to yield a total score between 0 and 100 such that higher scores mean better HRQoL.