Continuous support from a birth companion during labor has been shown to significantly reduce the perception of pain, decrease the need for analgesia, and improve overall birth outcomes. This support provides emotional reassurance, encouragement, and physical comfort, which enhances maternal coping mechanisms. Studies consistently demonstrate that continuous labor support leads to shorter labor durations and lower rates of cesarean delivery compared to other non-pharmacological methods. This makes it the most effective non-drug intervention for pain relief in labor.

Reference: Williams Obstetrics, Cunningham et al., 25th Edition.