Adherence to drug treatments and adjuvant barrier repair therapies are key factors for clinical improvement in mild to moderate acne: the ACTUO observational prospective multicenter cohort trial in 643 patients
© de Lucas et al. 2015
Received: 16 April 2015
Accepted: 7 September 2015
Published: 11 September 2015
In acne, several studies report a poor adherence to treatments. We evaluate, in a real-life setting conditions, the impact of compliance to physician’s instructions, recommendations and adherence to the treatments on clinical outcome in patients with mild to moderate acne in an observational, non-interventional prospective study carried out in 72 Dermatologic Services in Spain (ACTUO Trial).
Six-hundred-forty-three subjects were enrolled and 566 patients (88 %) completed the 3 study visits. Study aimed to evaluate the impact of adherence (assessed with ECOB scale) on clinical outcome, as well as how the use of specific adjuvant treatments (facial cleansing, emollient, moisturizing and lenitive specific topical products) influences treatment’s adherence and acne severity (0–5 points score). Recommendation of specific adjuvant skin barrier repair products was made in 85.2 %.
Overall, clinical improvement was observed throughout follow-up visits with an increased proportion of patients who reported reductions of ≥50 % on the total number of lesions (2 months: 25.2 %; 3 months: 57.6 %) and reductions of severity scores (2.5, 2.0 and 1.3 at 1, 2 and 3 months after treatment, respectively). Adherence to treatment was associated with a significant reduction on severity grading, a lower number of lesions and a higher proportion of patients with ≥50 % improvement.
Good adherence to medication plus adherence to adjuvants was significantly associated with a higher clinical improvement unlike those that despite adherence with medication had a low adherence to adjuvants. A good adherence to adjuvant treatment was associated with improved adherence and better treatment outcomes in mild to moderate acne patients. (ISRCTN Registry: ISRCTN14257026).
KeywordsAcne vulgaris Emollients Observational study Patient adherence Topical administration
Acne is a common skin chronic disease that very often requires prolonged treatments . With a chronic course  and an episodic pattern of presentation , Acne vulgaris lesions occur mainly in exposed areas like the face and the presternal region. The effect of the scarring may be notable and the functional, social and emotional impact on the patient’s quality of life may be significant [4, 5]. Adherence to doctor prescriptions has a major impact on treatment outcome . Several studies conducted over the past few years suggest that adherence to acne medications is particularly low [3, 7] and has been associated with inadequate response to therapy , especially when both topical and systemic treatments are prescribed to the same patient . The treatment plan and the choice of specific active ingredients should take into account not only the individual characteristics of the patient and/or the disease but also their preferences and expectations with treatment as well as questions of convenience .The adverse effects of the various therapies available should also be borne in mind in order to increase adherence to the physician’s instructions and recommendations, thus promoting what are known as health-related behaviours . Specific systemic and topical acne treatments are very often associated with local side effect such as dry, burning and itching sensations  hence poor tolerability further worsens compliance .,Based on the evidence and clinical experience obtained with topical treatments and their possible irritant effects , adjuvant skin barrier repair therapies such as specific emulsion and detergent products, hydrating and emollients are often prescribed in order to reduce these side effects, all in search of improving adherence to therapeutic strategies [13, 14]. Other factors such as a good and efficient physician-patient relationship are also crucial for improving adherence to therapeutic strategy  since this interaction includes specific roles and motivations  that might be essential to the healing of many patients, particularly so for patients with chronic disease or disease having a negative impact on quality of life and self-esteem such as acne . Adherence with acne therapies has been evaluated mainly in subjects irrespective to grading severity of the condition (from mild to severe forms) [8, 18] but, so far, few data are available regarding this conduct in patients with mild to moderate forms. We evaluated in a real-life setting condition the impact of adherence to dermatologist instructions and recommendations and adherence to the treatments x(specific anti acne treatments and adjuvant therapies) on the clinical outcome in patients with mild to moderate acne. The participating physicians of the ACTUO trial were practicing experienced Spanish dermatologists working in hospital outpatient dermatology services.
The main objective of this analysis was to evaluate the impact of adherence to the treatments on the clinical outcome in patients with mild to moderate acne. A secondary outcome was to evaluate the impact of the use of specific adjuvant treatments (facial cleansing products, emollient moisturizing and lenitive specific topical cream products containing mainly rhamnosoft as emollient and antiflammatory agent) on adherence level and entity of the clinical outcome obtained. Acne severity was assessed at each visit with a 5-point score system (from 0 to 4), absolute count of lesions and percentage of patient reaching a ≥50 % reduction in lesion numbers. Adherence to treatment was evaluated at visit 2 and visit 3 by means of validated 4-item questionnaire (ECOB) with a dichotomous classification: good adherence (ECOB score = 4) and poor adherence (ECOB <4). Poor adherence to treatment was defined as a different to expected answer on the ECOB questionnaire. The four questions of ECOB were according to Pawin et al. .
The FDA ratings made by the physician and patient after three months were grouped into two categories: presence of lesions (FDA ≥2-4), or absence or near absence of lesions (FDA = 0–1). Using the parameters severity and total number of lesions, improvement was assessed by classifying patients into two groups based on the reduction of acne severity (≥50 % improvement vs. improvement <50 %) and the percentages of reduction of comedones and papules/pustules. Statistical analysis was performed using the statistical software SPSS ver.19. Continuous variables were expressed as mean (SD). Categorical binary variables were expressed as proportions (%). The Mann–Whitney, Wilcoxon and the chi-square tests were used for inference statistical analysis tests. A multivariate logistics regression analysis was performed in order to assess the correlation between improvement of acne severity score, percentage of patients with 50 % or more in acne lesion number reduction, and the following variable: demographic data, adherence to specific treatments and to adjuvant treatments.
Sociodemographic data and acne severity at baseline visit
240 (37.8 %)
395 (62.2 %)
24 (3.8 %)
151 (23.9 %)
Vocational training (school)
51 (8.1 %)
188 (29.7 %)
Vocational training (technical college)
30 (4.7 %)
First cycle university studies
41 (6.5 %)
Second cycle university studies
146 (23.1 %)
1 (0.2 %)
Physician’s acne evaluation
Practically without lesions
32 (5.0 %)
298 (46.6 %)
290 (45.3 %)
20 (3.1 %)
Patient’s acne evaluation
16 (2.7 %)
Practically without lesions
126 (21.2 %)
245 (41.2 %)
195 (32.8 %)
12 (2.0 %)
622 (97.6 %)
212 (33.3 %)
81 (12.7 %)
73 (11.5 %)
2 (0.3 %)
Total number of lesionsa(Percentages of 568 patients with lesions)
532 (93.7 %)
545 (96.0 %)
147 (25.9 %)
Recommendation of specific adjuvant products (facial soaps/cleansers and specific facial care products)
104 (16.3 %)
536 (83.8 %)
Multiple logistic regression analysis was performed to identify factors influencing clinical improvement of acne. Adherence to specific treatments, adherence to adjuvant treatments and good adherence to treatment are significantly (p = 0.001) correlated with clinical improvement of acne. In accordance with previous studies, sex (women vs. men) and the fact to be accompanied (by parents/tutor or relative) or not at the medical visit are also independent factors affecting improvement clinical outcome of acne. Other analysis allowed observing an association between the patient’s assessment of quality of life based on the DLQI scale and the adherence to adjuvant treatment since rates of improvement on QoL were lower in non-compliers (43 % vs. 56.1 %, p = 0.007).
Low adherence to treatments is still a relevant problem in the treatment of mild to moderate acne . The definition of strategies to improve adherence with both pharmacological and behavioural treatment remains a major challenge. Suboptimal medication adherence is one of the major reasons for treatment failure in subject with acne vulgaris . Our findings reveal that dermatologists in Spain frequently prescribe specific adjuvant treatment for acne. They recommend the use of specific products including non-comedogenic soaps and moisturizers in over 80 % of acne patients. The synergy between the effects of drug treatment and adjuvant products can improve comfort during the various stages of treatment and can encourage patients to continue the application of the products. Adherence to adjuvant treatment was associated not only with a 2.4-fold increase in the probability of adherence to pharmacological treatment, but also with a significant reduction in acne severity, in the number of lesions as assessed by both the treating physician and the patient, and a higher percentage of patients whose severity improved by 50 % or more. In the ACTUO study low adherence to treatment was found in 50 % of the patients (at 1 month) and this result is in line with previous published data. Low adherence to adjuvant treatments was observed in up to 63.8 % of subjects after 3 months. In addition we have to consider that these data derived from a per protocol analysis, not including 12.4 % of patients not attending to control visits which therefore could be considered as”non-complier” by definition. In line with previous experiences , we have observed that adherence to pharmacological treatment is a key factor for the improvement of acne both in terms of reduction of severity grading, number of lesions and percentage of patients obtaining at least a 50 % acne improvement. Good adherence to adjuvant treatments also improves clinical evolution of acne with a greater reduction of severity of grading and number of lesions and with a significant greater percentage of patients obtaining a 50 % or more improvement of acne in comparison with patients with poor adherence to adjuvant treatments. Furthermore, patients with good adherence with drug and those with adherence to adjuvant treatments presented the highest percentage of patients with improvement of acne lesions ≥50 %. In addition, in the present study it was shown that adherence to adjuvant products is the second most important factor (just after adherence to drug treatment) influencing the degree of acne improvement. A good adherence to adjuvant treatment is associated with an improved adherence to acne treatments and with a better treatment outcome in mild to moderate acne patients. Some limitations should be taken in account in evaluating the results of our study. In particular the evaluation of compliance was based on self-reporting questionnaire. This approach however was used in other studies assessing the same outcome and the ECOB questionnaire is considered a validated tool [3, 18]. On the other hand, we believe that the sample size and the study design adopted, quite close to “real life” conditions of acne treatment strategies, could be considered as aspects increasing the external validity and the generalization of the observed results of the ACTUO.
The ACTUO observational study results confirm that adherence to pharmacological treatment and adjuvant therapies are both key factors of acne improvement in terms of reduction of severity, number of lesions and percentage of patients with at least a 50 % acne improvement. In addition, adherence to adjuvant treatment with specific cleansers and moisturizers for patients with acne is the second most important factor in achieving symptom improvement, after completion of drug treatment. Good adherence to adjuvant treatment is associated with a 2.2-fold increase in the probability of adherence to topical pharmacological treatment and with significant reductions in the severity and number of acne lesions.
Elaboration de un outil de evaluación de l’observance des traitaments medicamenteux
Case report form
Federal Drugs Administration
Actuo Study Group Investigators: Abellaneda Fernández, Cristina; Aguayo Leyva, Ingrid Rocío; Alcaraz León, Inmaculada; Alonso García, Ignacio; Arechalde Pérez, Ana; Balbín Carrero, Eva; Ballestero Corominas, Alejandro; Bilbao Badiola, Ibon; Boada García, Aram; Ciudad Blanco, Cristina; De Lucas, Raúl; Del Pozo Hernando, Luis Javier; Del Rio Reyes, Rosa; Eguino Gorrochategui, Patricia; Escalas Taberner, Juan; Espelt Otero, Jorge Luis; Fernández Angel,Isabel; Fernández Casado, Alex; Fernández Torres, Rosa Mª; Gallego Álvarez, Silvia; Galvany Rosell, Loida; Gamo Villegas, Reyes; Ginarte Val, Manuel; Gómez Fernández, Cristina; Gómez Vázquez, Mercedes; Gutiérrez De La Peña, Javier; Hernandez Cano, Natalia; Houmani Houmani, Manmoud; Ibargoyen Esnal, Jesús; Iglesias Sancho, Maribel; Izquierdo Herce, Noelia; Jeremías Torruella, Javier; Latorre Fuentes, José Mª; Llambrich Mañes, Alex; López Ferrer, Ana; Mariscal Polo, Amaia; Márquez Balbas, Gemma; Martin Ezquerra, Gemma; Martin Urda, Maria Teresa; Martinez Escala, Maria Estela; Martinez Fernández, Matilde; Mieras Barceló, Caterina; Molina Ruiz, Ana; Montero Pérez, Iria; Moreno Arias, Gerardo A.; Nadal Llado, Cristina; Naranjo Díaz, Maria José; Nasarre Calvo,Jaume; Navajas Pinedo, Belén; Oleaga Morante, José Manuel; Perelló Llinas, Guillermo; Pérez Losada, Mª Eugenia; Pérez-López, Montserrat; Pérez-Beato De Cos, Mª Paz; Pestoni Porven, Carmela; Poza Magdalena, Olga; Rocamora Duran, Vicenc; Rodriguez Caruncho, Clara; Rodriguez Granados, Mª Teresa; Roe Crespo, Esther; Ruiz Carrascosa, José Carlos; Salgado Boquete, Laura; Sanchez Muros, Virginia; Sanz De Galdeano Palacio,Carmen; Taberner Ferrer, Rosa; Trasobares Marugan, Lidia; Uria García, Mª Carmen Valle Martin, Mª Del Mar; Valle Santana, Pilar; Vázquez García, Juan; Velasco Pastor, Manuel; Vera Casaño, Angel; Vilarrasa Rull, Eva; Waadad Waadad, Tamim.
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