An interventional study of warm color and cold color in Anesthesia and Anxiety, sponsored by Zhihong LU. Not yet recruiting. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-09-15.
Sponsored by Zhihong LU · Not applicable, Interventional, and Treatment
This study will use a factorial design to compare the effects of different colors and shapes on patients' preoperative anxiety.
7,201 studies on the registry are indexed under Anxiety Disorders; 1,682 are open to participants now.
This study's planned enrollment of 272 is above the median of 80 across 6,057 interventional studies indexed under Anxiety Disorders.
Browse Anxiety Disorders studies →Zhihong LU is the lead sponsor of 17 studies on the registry; 7 are open to participants now.
Compared within Anxiety Disorders, the registry's first condition term, which may not be this study's main condition. Counted across the registry records on this site, refreshed daily. How we classify →
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
warm color and sharp shape are shown to the patients
Behavioral: warm color · Behavioral: sharp shape
warm color and smooth shape are shown to the patients
Behavioral: warm color · Behavioral: smooth shape
cold color and sharp shape are shown to the patients
Behavioral: cold color · Behavioral: sharp shape
cold color and smooth shape are shown to the patients
Behavioral: cold color · Behavioral: smooth shape
red and yellow color picture is used
blue and green color is used
triangle shaped picture is used
circle and curve are used
score of visual analogue scale (VAS) of anxiety
The Visual Analog Scale for Anxiety (VAS-A) is a single-item, quick-assessment tool consisting of a 100-mm horizontal line anchored by "no anxiety" at the left end (0 mm) and "worst possible anxiety" at the right end (100 mm). Patients were instructed to mark the point that best represented their current level of anxiety.
Time frame: at the end of intervention, approximately 10 minutes before start of anesthesia
heart rate
Time frame: at the end of intervention, approximately 10 minutes before start of anesthesia
score of State-Trait Anxiety Inventory-State (STAI-S)
The State-Trait Anxiety Inventory-State (STAI-S) is a 20-item self-report questionnaire designed to assess transient or situational anxiety levels. Each item is rated on a 4-point Likert scale ranging from 1 ("not at all") to 4 ("very much so"), with total scores ranging from 20 to 80. Higher scores indicate higher levels of anxiety.
Time frame: at the end of intervention, approximately 10 minutes before start of anesthesia
score of visual analogue scale (VAS) of anxiety
The Visual Analog Scale for Anxiety (VAS-A) is a single-item, quick-assessment tool consisting of a 100-mm horizontal line anchored by "no anxiety" at the left end (0 mm) and "worst possible anxiety" at the right end (100 mm). Patients were instructed to mark the point that best represented their current level of anxiety.
Time frame: Before anesthesia induction, approximately 1 minute before start of anesthesia
Engagement level during the painting task
measured by a 0-10 subjective rating scale, 0 is not engaged, 10 is totally engaged
Time frame: from start of painting to end of painting , approximately 10 minutes
tachycardia
heart rate over 100 beats per minute
Time frame: from admitted into the operating room to start of anesthesia, at an average of 15 minutes
hypertension
systolic blood pressure increased by more than 20% of baseline. baseline blood pressure is measured in waiting area
Time frame: from admitted into the operating room to start of anesthesia, at an average of 15 minutes
Visual analogue score of sleep quality
Visual analogue score of sleep quality is from 0 to 10, 0 is the worst quality, 10 is the best quality
Time frame: at 24 hours after surgery
Score of satisfaction to anesthesia
Score of satisfaction to anesthesia is from 0 to 10, 0 is the worst quality and totally unsatisfied, 10 is the best quality and fully satisfied
Time frame: at 24 hours after surgery
score of visual analogue scale (VAS) of anxiety
The Visual Analog Scale for Anxiety (VAS-A) is a single-item, quick-assessment tool consisting of a 100-mm horizontal line anchored by "no anxiety" at the left end (0 mm) and "worst possible anxiety" at the right end (100 mm). Patients were instructed to mark the point that best represented their current level of anxiety.
Time frame: at 24 hours after the end of the surgery
Individual preferences for colors and shapes
1, prefer curve and warm color; 2, prefer angle and warm color; 3, prefer curve and cold color; 4, prefer angle and cold color
Time frame: before intervention, approximately 30 minutes before anesthesia
No study locations are listed for this record.
Plan to share: Yes — De-identified individual patient data will be available after publication with reasonable request to Dr. Zhihong Lu.
Supporting information: Study protocol
Time frame: after publication
Access criteria: with reasonable request to Dr. Zhihong Lu
This study is not yet recruiting, as verified in Sep 2026. You cannot join it, but the record below documents what was studied.
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