A prospective cohort study was carried out in a Spanish university hospital, between September 2020 and February 2021. Patients with cured or medically controlled (normal GH and IGF-1) acromegaly under follow-up at the outpatient clinic were invited to participate in the study. The inclusion criteria were: patients ≥ 18 years of age, with regular outpatient follow-up, being diagnosed of acromegaly and either cured or hormonally controlled through medical treatment.
After contacting 50 patients with follow-up at our center, 30 accepted to participate. The recruitment was carried out through a telephone contact, as well as during the regular scheduled visits at the outpatient clinic. Recruitment period extended from October to December 2020.
The study variables were the following: a) Sociodemographic: age, sex, educational level, work activity and social situation; b) Anthropometric: weight, height, Body Mass Index (BMI); c) Variables related to the acromegaly conditions: tumor size at diagnosis, comorbidities, treatments performed (surgery, radiotherapy, and medical treatment used), recurrence rate, and disease activity; d) Anxiety Level, measured through the State-Trait Anxiety Questionnaire (STAI); f) Quality of life evaluation through AcroQoL; g) Self-esteem status, using the Rosemberg Self-Esteem Scale and g) Facial acromegaly phenotypic changes were evaluated by examination of photographs provided by the participants by 8 trained endocrinologists which gave a score based on a Likert scale from 0 to 10 (0= no facial modification, 10= maximum facial acromegaly phenotypic modifications), reflecting the general acromegaly facial burden of each picture. Specifically, visual morphometry was performed from 3 facial photographs which included one before the diagnosis (Pre-diagnosis), another one performed during the diagnosis period (Diagnosis) and a final one corresponding to the period of current follow-up in which the disease was either cured or under GH hypersecretion control assessed by normal circulating GH and IGF-1; each photograph was individually scored by a group of 8 trained endocrinologists. For evaluation of facial changes, particular attention was paid to the modifications at the tip of the nose, the margin of the eyes, cheekbones, mouthwashes and the margin of the nostrils; facial soft tissue changes were also considered although patients were either cured or under medical control, thus minor changes were expected to be found at the post-diagnostic time, but were have to be present at the pre-diagnostic and diagnostic images. As previous publications reported greater enlargement of nasofrontal angles and greater mento-labial angles for females, these sexually dimorphic characteristics were specially evaluated. The concordance between physician’s scoring was also assessed using the intraclass correlation index.
The following instruments and questionnaires were used for psychologic and QoL assessment:
a) Anxiety was measured through the State-Trait Anxiety Questionnaire (STAI); the State and Trait Anxiety Inventory (STAI) measures two dimensions of anxiety: state anxiety and trait anxiety. It consists of a brief 6-item reduced version of the original STAI (Spielberger et al., 1983), obtaining good psychometric measurement properties and a consistent structure (α = 0, 80 in state anxiety and α = 0.88 in trait anxiety). This reduced version comprises six items per scale with a minimum score of 0 and a maximum of 18. This short version has been shown to have good validity in different populations (Guillén-Riquelme and Buela-Casal, 2013). b) Quality of life evaluation through AcroQoL; The AcroQoL scale is a disease-specific questionnaire to assess health-related quality of life in patients with acromegaly. The scale mainly evaluates two dimensions: physical function and psychological well-being of the patient. The psychological scale is subdivided into two subscales regarding appearance and personal relationships, containing seven items each. The questionnaire consists of 22 questions, each of which is answered on a 5-point Likert scale that measures the frequency of occurrence (ranging from "always" to "never") or the degree of agreement with the elements (ranging from “strongly agree” to “strongly disagree”). The highest achievable score is 110, which is indicative of an excellent quality of life, while the lowest score is 22. The scale has been translated and validated in the Spanish population, with a Cronbach's α > 0.8, which indicates high reliability and internal consistency (16). c) Self-esteem status, using the Rosemberg Self-Esteem Scale; this questionnaire explores personal self-esteem as the feelings of personal worth and self-respect. The scale consists of 10 items, each of which is answered on a 5-point Likert scale (1 Strongly agree, 2 Agree, 3 Disagree, 4 Strongly disagree), five are stated positively and five negatively. Scores of 30 to 40 points indicate high self-esteem, 26 to 29 points, average self-esteem and less than 25 points low self-esteem. The scale has been translated and validated in Spanish. The internal consistency of the scale is between 0.76 and 0.87 (17).
All clinical variables were included in a Data Collection Form (DCF), and were retrieved from the electronic clinical history of the hospital, which contains all the clinical, pharmacological and follow-up variables of acromegalic patients. The facial photos provided by all participants were also included in the DCF for the study purposes. In the DCF each patient and its personal information was registered used an anonymized code following the indication and supervision of the data protection officer of the institution.
The study was approved by the Clinical Ethics Committee (registry code PI-19-247). Written informed consent was obtained from all participants.
For the description of all quantitative variables, the mean and standard deviation (SD), or the median and the interquartile range were calculated. Qualitative variables are presented as frequencies and percentages. Inferential analysis was carried out based on the Spearman or Pearson correlation coefficient. A significant level of 0.05 was considered in all tests. All data were analyzed with IBM SPSS software version 27.