Imagery rehearsal therapy is a brief, well-tolerated treatment that appears to decrease chronic nightmares, improve sleep quality, and decrease PTSD symptom severity.
Imagery-rehearsal therapy for chronic nightmares was assessed in a randomized, controlled study of sexual assault survivors with posttraumatic stress disorder (PTSD). Nightmares, sleep quality, and PTSD were assessed at baseline for 169 women, who were randomized into two groups: treatment (n = 87) and wait-list control (n = 82). Treatment consisted of two 3-hr sessions and one 1-hr session conducted over 5 weeks. Of 169 participants, 91 women (Treatment, n = 43, Control, n = 48) completed a 3-month follow-up and 78 did not. At follow-up, nightmare frequency and PTSD severity decreased and sleep quality improved in the treatment group with small to minimal changes in the control group. Treatment effects were moderate to high (Cohen's d ranged from 0.57 to 1.26). Notwithstanding the large dropout rate, imagery-rehearsal therapy is an effective treatment for chronic nightmares in sexual assault survivors with PTSD and is associated with improvement in sleep quality and decreases in PTSD severity.
Aim
To better understand differences between Bayley Scales 3rd edition (Bayley III) Cognitive Scale and Bayley Scales 2nd edition (Bayley II) Mental Developmental Index (MDI) in 18–22 month old children born term and preterm; and to create a conversion algorithm using Bayley II MDI to calculate Bayley III Cognitive score.
Methods
This study included 51 term and 26 preterm children between 18 and 22 months, ages adjusted for prematurity. Children’s scores on Bayley II MDI and Bayley III Cognitive Scale were compared using t-tests. The items from Bayley II MDI were used to calculate a score for the Bayley III Cognitive Scale. ANCOVA was used to create a conversion scale.
Results
Bayley III Cognitive scores were significantly higher than Bayley II MDI scores for term and preterm toddlers combined and separately (p<.0001). A conversion formula to convert Bayley II MDI to a Bayley III Cognitive score was calculated.
Conclusion
Term and preterm children had similarly elevated scores on the Bayley III calculated Cognitive score compared to the previous Bayley II MDI score. The use of a conversion algorithm maybe helpful in studies that used both Bayley editions in order to get comparable outcome measurements within a clinical or research paradigm.
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