Participants were provided care in different rooms, blinded to the differences in practice used between the two groups. In the same clinic, a room was designed as a positive delivery room by the researchers and a relaxing environment was created. In this room, supportive care based on trauma informed care was provided to the experimental group during birth.

Participants in the control group, on the other hand, received the routine care given in the hospital by other midwives in the clinic, and there was a change of caregiver midwife during shift changes. The care provided in the hospital during delivery is mostly focused on low level of physical comfort and high level of follow-up.

Participants were provided care in different rooms, blinded to the differences in practice used between the two groups. In the same clinic, a room was designed as a positive delivery room by the researchers and a relaxing environment was created. In this room, supportive care based on trauma informed care was provided to the experimental group during birth.

Women's labor pain at the time of birth were evaluated with the Visual Analogue Scale (DFS). The individual evaluates pain between "0-10 points. 0- I don't have any pain", "10- I have so much pain that I can't stand it". The higher the pain, the higher the score.

Women's fears at the time of birth were evaluated with the Delivery fear scale (DFS).

This scale was developed for fear during delivery. The Turkish validity and reliability of the scale were performed. This scale consisting of 10 items is a 10-point Likert-type. The positive-meaning items are scored in reverse order. Therefore, the scores ranged from 10 to 100. The scale has no cutoff score, and high scores indicated higher fear.

Women's perceptions of support and control at the time of birth were evaluated with the Perceived control and support in birth scale.

SCIB was developed to measure perceived support and control in birth. The Turkish validity and reliability of the scale were performed. This scale consisting of 33 items is a 5-pointLikert-type (5 = agree completely to 1 = disagree completely). Ten items are scored in reverse order. The scores ranged from 33 to 165. SCIB subscales include internal control, external control, and support. The scale has no cutoff score, higher scores are associated with a higher degree of perceived support and of control during birth. The Cronbach's alpha for the original scale was measured as .95 and Turkish version was measured as 0.84. In this study, this scale was administered within 24 hours postpartum.

Birth trauma of women were evaluated with the City Birth Trauma Scale. City BiTS was developed to measure birth trauma. The Turkish validity and reliability of the scale were performed. The scale is a fourpoint Likert-type instrument composed of 29 items. Higher scores reflect greater risk for Post-traumatic Stress Disorder (PTSD). The Cronbach's alpha for the original scale was measured as .92 and Turkish version was measured as 0.91. In this study, 6-8 days after birth to determine whether they meet the criteria for birth trauma and birth-related PTSD.