^Yoshihisa Shirayama, Samlane Phompida, Chushi Kuroiwa, 2006. p. 622, quote: «[...] Approximately 60 to 65% of the population, most of whom are Lao Lum (people of the lowlands) follow Buddhism. About 30% of the population, on the other hand, hold an animist belief system called "Sadsana Phee" [...]».
Yoshihisa Shirayama, Samlane Phompida, Chushi Kuroiwa. Malaria Control Alongside "Sadsana-Phee" (Animist Belief System) in Lao PDR. In: Modern Medicine and Indigenous Health Beliefs, Vol 37 No. 4 July 2006.