Conditional economic incentives and motivational interviewing to improve adolescents’ retention in HIV care and adherence to antiretroviral therapy in Southeast Nigeria: study protocol for a cluster randomised trial

Table 3 Data analysis outline

Study objective	Outcome variable	Type of analysis
Objective 1: effectiveness of intervention	Primary outcome
	HIV viral load	χ² test or Fisher’s exact test
	Secondary outcomes
	CD4+ count	Within group: paired-sample t tests or Wilcoxon signed-rank tests; between group – Student’s t test or Wilcoxon signed-rank tests
	Adherence to antiretroviral therapy (ART)	χ² test or Fisher’s exact test
	Adherence to hospital appointment	Within group: paired-sample t tests or Wilcoxon signed-rank tests; between group – Student’s t test or Wilcoxon signed-rank tests
Objective 2: cost-effectiveness analysis	Cost-effectiveness of intervention	Incremental cost-effectiveness ratio
Objective 3: qualitative assessment of implementer’s perspective	Programme implementer’s perspective	In-depth interview (thematic content analysis)

ISSN: 1745-6215