Liputan media positif tentang studi ganja terlepas dari efek terapeutik

Liputan media positif tentang studi ganja terlepas dari efek terapeutik

Dalam uji coba ganja terhadap rasa sakit, orang yang menggunakan plasebo melaporkan merasakan tingkat pereda nyeri yang sebagian besar sama dengan mereka yang mengonsumsi zat cannabinoid aktif. Namun, studi ini menerima liputan media yang signifikan terlepas dari hasil klinisnya, lapor para peneliti dari Karolinska Institutet di Swedia dalam sebuah penelitian yang diterbitkan diJAMA Network Open.

"Kami melihat bahwa studi ganja sering dijelaskan secara positif di media terlepas dari hasilnya," kata penulis pertama studi tersebut Filip Gedin, peneliti postdoc di Departemen Ilmu Saraf Klinis, Karolinska Institutet. "Ini bermasalah dan dapat mempengaruhi harapan ketika datang ke efek terapi ganja pada rasa sakit. Semakin besar manfaat yang diasumsikan dimiliki suatu pengobatan, semakin banyak potensi bahaya yang dapat ditoleransi."

Studi ini didasarkan pada analisis studi klinis yang diterbitkan di mana ganja telah dibandingkan dengan plasebo untuk pengobatan nyeri klinis. Perubahan intensitas nyeri sebelum dan sesudah pengobatan adalah pengukuran hasil utama penelitian.

Analisis tersebut mengacu pada 20 studi yang diterbitkan hingga September 2021 yang melibatkan hampir 1.500 individu.

Hasil penelitian menunjukkan bahwa rasa sakit dinilai secara signifikan kurang intens setelah pengobatan dengan plasebo, dengan efek sedang hingga besar. Para peneliti juga mengamati tidak ada perbedaan dalam pengurangan rasa sakit antara ganja dan plasebo, yang menguatkan hasil dari meta-analisis lain yang baru-baru ini diterbitkan.

"Ada respons plasebo yang berbeda dan relevan secara klinis dalam studi ganja untuk rasa sakit," kata Dr Gedin.

Para peneliti juga memeriksa kemungkinan hubungan antara besarnya efek terapeutik yang ditunjukkan oleh studi ganja dan liputan yang mereka terima di media dan di jurnal akademik. Kehadiran media diukur melalui Altmetric, yang merupakan metode evaluasi penyebutan di media, di blog dan di media sosial. Dampak akademik diukur dari segi sitasi oleh peneliti lain.

Analisis kehadiran media mencakup total 136 item berita di media tradisional dan di blog dan dikategorikan sebagai positif, negatif atau netral, tergantung pada bagaimana hasilnya disajikan mengenai efektivitas ganja sebagai pengobatan untuk rasa sakit.

Para peneliti menemukan bahwa studi ganja menerima perhatian media yang jauh lebih besar daripada studi lain yang diterbitkan. Cakupannya substansial terlepas dari besarnya respons plasebo dan terlepas dari efek terapeutik ganja. Mereka juga mengamati tidak ada hubungan antara proporsi berita yang dijelaskan secara positif tentang suatu penelitian dan efek yang dilaporkannya.

Para peneliti menambahkan peringatan bahwa studi mereka menggabungkan uji coba dengan berbagai desain dan kualitas dan oleh karena itu hasilnya harus ditafsirkan dengan hati-hati.

Penelitian ini dibiayai oleh Riksbankens Jubileumsfond (Karin Jensen). Para peneliti melaporkan tidak ada potensi konflik kepentingan.

Publikasi: "Respons Plasebo dan perhatian media dalam uji klinis acak yang menilai terapi berbasis ganja untuk rasa sakit: Tinjauan sistematis dan meta-analisis", Filip Gedin, Sebastian Blomé, Moa Ponten, Maria Lalouni, Jens Fust, Andreé Raquette, Viktor Vadenmark Lundquist, William H. Thompson dan Karin Jensen, JAMA Network Open, online 28 November 2022, doi:10.1001/jamanetworkopen.2022.43848



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