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Morten Pais Ruge1, Therese Mørch2, Sara Pais Ruge3

  • 1Børne- og ungdomspsykiatrisk Afdeling, Odense Universitetshospital.

Ugeskrift for Laeger
|December 12, 2023
PubMed
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Adding acetylsalicylic acid (ASA) to Christmas tree water does not extend their aesthetic lifespan (EL). This study found no significant difference in spruce branch longevity between ASA, placebo, and sildenafil treatments.

Area of Science:

  • Botany
  • Plant Physiology
  • Horticulture

Background:

  • Acetylsalicylic acid (ASA) is popularly believed to extend the aesthetic lifespan (EL) of Christmas trees.
  • Scientific evidence supporting this common recommendation is lacking.

Purpose of the Study:

  • To investigate the efficacy of ASA in prolonging the aesthetic longevity of spruce branches.
  • To compare ASA's effectiveness against placebo and sildenafil treatments.

Main Methods:

  • A triple-blinded, randomized clinical trial was conducted with 60 spruce branches.
  • Branches were allocated to three groups: ASA, placebo, and sildenafil (1:1:1 ratio).
  • The primary endpoint was the aesthetic lifespan (EL) of the branches.

Main Results:

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  • No statistically significant differences in survival times were observed among the groups (ASA: 17 days, placebo: 20 days, sildenafil: 21 days; p = 0.30).
  • Log-rank test and Cox proportional-hazards analyses did not reveal significant variations in aesthetic survival time.
  • All branches completed the study without significant differences in longevity.

Conclusions:

  • There is no empirical support for using ASA to extend the aesthetic lifespan of Christmas trees.
  • The common recommendation to add ASA to Christmas tree water is not substantiated by this study's findings.