Validitas Gelombang Frekuensi Tangisan Bayi Sebagai Alat Ukur Nyeri Saat Peny…

Crying is one of communication forms the infant. This study aimed to validate and measure the frequency of baby cry (Hertz) and establish it as a new standard reference in assessing infant pain during immunization. This study was an observational study, sampling was done according to the determination of criteria inclusion with 72 infant as respondents in Harapan raya health center, Limapuluh h…