... Manipulation of variables Health system analysis: Number of participants per pool session: Salary of personnel: No additional salary of nurse Best case scenario of salary, participation and effectivenessb ... study, as well as the acquisition, analysis, and interpretation of data, and writing of the manuscript PTC was involved in the acquisition of data, analysis and assisting in the writing of manuscript ... scenario of salary, participation, effectiveness and nearb Worst case scenario of salary, participation, effectiveness and farc QALY, quality adjusted life year aFrom the Spanish Health System,...