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Table 2 Overview of constructs and assessments throughout the randomized controlled pilot study protocol

From: Protocol for a pilot randomized controlled feasibility study of brief interpersonal psychotherapy for addressing social-emotional needs and preventing excess gestational weight gain in adolescents

Construct

Measurement

Description

Intervals assessed

Reference

Primary outcomes

 Feasibility of study

 

Number of eligible participants, randomized participants, retention and attrition of randomized participants

Baseline, mid-pregnancy, post-program, 3-month postpartum

[65]

 Acceptability of IPT

 

IPT session attendance (≥ 80%), above-average participant IPT program ratings

Post-program

[66]

Secondary Outcomes

 Social functioning

SAS-SR

24-item self-report scale of interpersonal functioning in family, friend, romantic, and school or work domains

Baseline, mid-pregnancy, post-program, 3-month postpartum

[67]

NRI-BSV

28-item self-report scale of relationship characteristics for mother, father, peer, and romantic partner relationships

[68]

 Perceived stress

PSS

14-item self-report scale to assess perception of stress

Baseline, mid-pregnancy, post-program, 3-month postpartum

[69]

 Depression

CES-D

20-item self-report scale to assess depression symptoms

Baseline, mid-pregnancy, post-program, 3-month postpartum

[70]

EPDS

10-item self-report scale to assess depression symptoms

Baseline, mid-pregnancy, post-program, 3-month postpartum

[71, 72]

MINI-KID

Structured clinical interview to assess psychiatric disorders, such as major depressive disorder

Baseline, post-program, 3-month postpartum

[73]

 Disinhibited eating

EDE

Semi-structured interview to assess disordered eating including objective binge, subjective binge, and objective overeating

Baseline, post-program, 3-month postpartum

[74, 75]

EES-C

25-item self-report questionnaire to assess eating in response to negative emotions

Baseline, mid-pregnancy, post-program, 3-month postpartum

[76]

 Physical activity

ActiGraph GT3X+

Body-worn accelerometer to measure 7 days and nights of habitual physical activity including step counts, light and moderate-vigorous intensity, and sedentary time

Baseline, mid-pregnancy, post-program

[77, 78]

 Sleep disturbance

ActiGraph GT3X+

Body-worn accelerometer to measure 7 nights of sleep including total sleep time, sleep onset latency, wake after sleep onset, and sleep efficiency

Baseline, mid-pregnancy, post-program

[79, 80]

 Body composition

BMI indices

Height and weight measured to calculate BMI

Baseline, mid-pregnancy, post-program, 3-month postpartum

[81]

 Maternal postpartum adiposity

Body fat

DXA conducted to measure body composition including total fat and lean mass

3-month postpartum

[82, 83]

 Maternal insulin sensitivity

WBISI, QUICKI, HOMAIR

7-sample, 2-h oral glucose tolerance test to estimate insulin sensitivity

3-month postpartum

[84, 85]

 Infant adiposity

Body fat

Infant PeaPod conducted to measure body composition including total fat and lean mass

3-month postpartum

[86]

  1. Baseline baseline/screening assessment occurring around 12–18 weeks gestation; Mid-Pregnancy mid-pregnancy assessment occurring around 21–28 weeks gestation; Post-Program post-program assessment occurring around 30–34 weeks gestation; 3 Month Postpartum assessment occurring around postpartum week 12; SAS-SR Social Adjustment Scale, Self-Report; NRI-BSV Network of Relationships Inventory-Behavioral Systems Version; PSS Perceived Stress Scale; CES-D Center for Epidemiologic Studies-Depression Scale; EPDS Edinburgh Postnatal Depression Scale; MINI-KID Mini-International Neuropsychiatric Interview for Children and Adolescents; EDE Eating Disorder Examination; EES-C Emotional Eating Scale-Adapted for Children; BMI body mass index (kg/m2, z-score, percentile); DXA dual-energy X-ray absorptiometry; WBISI whole body insulin sensitivity index; QUICKI quantitative insulin sensitivity check index; HOMAIR homeostasis model assessment of insulin resistance