Table 3

Statistical plan

Construct-outcome measureAssessment pointData typeEffect measureTests
T0T1T2T3
Screening: (1) Demographic datax

  • Continuous

  • Nominal

  • Ordinal

  • Means

  • Proportions

  • Median

  • Range

  • Continuous- t-tests

  • Binary/categorical–χ2

Primary clinical outcomes: (1) CMDs-SSQ-14xxxx

  • Numeric–summative scores

  • Binary–classifications per cut-off points

  • Mean differences

  • Differences in proportions

  • One-way ANOVA repeated measures

  • Kruskal-Wallis

Secondary clinical outcomes: (1) Depression–PHQ-9, (2) Anxiety–GAD-7, (3) Social support–MPSS, (4) Functioning–WHODAS, (5) HRQoL–EQ-5D-5L, (6) Hope– Herth Hope Index, (7) Resilience–Davison Connor Resilience Scale, (8) therapeutic alliance- WAI-SRxxxxNumeric–summative scoresMean differencesOne-way ANOVA repeated measures
Implementation outcomes: (1) feasibility, (2) uptake/reach, (3) satisfaction, (4) economic/costxxxNumeric–summative scores
Qualitative

  • Mean differences

  • Thematic analysis

t-tests

  • ANOVA, analysis of Variance; CMDs, common mental disorders; EQ-5D-5L, EuroQol 5 Dimensions 5 Level; GAD-7, Generalised Anxiety Disorder Assessment; HRQoL, health-related quality of life; PHQ-9, Patient Health Questionnaire; SSQ-14, Shona Symptom Questionnaire; WAI-SR, Working Alliance Inventory-Short Revised (WAI-SR); WHODAS, WHO Disability Assessment Schedule.