Tarazona Cochachin, M. .; Huamán Gutiérrez, Z. .; Norabuena Figueroa, E. .; Norabuena Figueroa, R. EFFECT OF SAMPLE SIZE ON THE ADJUSTMENT INDICES OF THE CONFIRMATORY FACTORIAL ANALYSIS ON THE PHQ - 9 QUESTIONNAIRE APPLIED TO THE PERUVIAN POPULATION. Rev. Investig. Hatun Yachay Wasi 2022, 1, 158-174.