Efficacy of Proactive Topical Antihistamine Use in Patients with Seasonal Allergic Conjunctivitis.

INTRODUCTION: Topical antihistamines are often instilled symptomatically to control patients' eye allergy symptoms. The purpose of this study was to evaluate the effectiveness of proactive and as-needed use of antihistamine eye drops in controlling symptoms and to examine whether proactive use may improve quality of life (QOL). METHODS: This was a prospective, multicenter, cohort study in Japan. We classified 418 patients who had developed certain symptoms and used antihistamine eye drops for 2 weeks into two groups: those who used the drops at the required frequency at a fixed time (proactive use) and those who used them as-needed. The Japanese Allergic and Conjunctival Diseases Quality of Life Questionnaire (JACQLQ) and Ten-Item Personality Inventory were used to evaluate QOL and personality. Participants' QOL was evaluated using JACQLQ scores after matching of baseline characteristics using propensity score analysis. RESULTS: After propensity score matching, 115 "proactive" and 115 "as-needed" patients were analyzed. After treatment, in "as-needed" patients, the overall QOL scale was 1.66 (95% CI 1.55-1.78); in "proactive" patients, the overall QOL scale was 1.34 (95% CI 1.23-1.46) and was significantly improved compared with the "as-needed" patients (analysis of covariance, P = 0.002). Furthermore, proactive use significantly alleviated depression (P = 0.03). This improvement of QOL was independent of improvement of the clinical sign scores. CONCLUSION: Proactive use of topical antihistamine may serve as an effective means for improving QOL of patients with seasonal allergic conjunctivitis. TRIAL REGISTRATION: University Hospital Medical Information Network (UMIN) 000039554.

Reliability and Validity of Electronic Patient-Reported Outcomes Using the Smartphone App AllerSearch for Hay Fever: Prospective Observational Study.

BACKGROUND: Hay fever is a highly prevalent, heterogenous, and multifactorial disease. Patients may benefit from longitudinal assessments using mobile health (mHealth) principles. We have previously attempted to establish an effective mHealth platform for patients with hay fever through AllerSearch, our in-house smartphone app that assesses electronic patient-reported outcomes through a questionnaire on hay fever and provides evidence-based advice. To be used by the public, an investigation on its reliability and validity is necessary. OBJECTIVE: The aim of this paper is to assess the reliability and validity of subjective symptom data on hay fever collected through our app, AllerSearch. METHODS: This study used a prospective observational design. The participants were patients aged ≥20 years recruited from a single university hospital between June 2, 2021, and January 26, 2022. We excluded patients who could not use smartphones as well as those with incomplete data records and outlier data. All participants answered the Japanese Allergic Conjunctival Disease Standard Quality of Life Questionnaire (JACQLQ), first in the paper-and-pencil format and subsequently on AllerSearch on the same day. The JACQLQ comprises the following three domains: Domain I, with 9 items on ocular or nasal symptoms; Domain II, with 17 items on daily activity and psychological well-being; and Domain III, with 3 items on overall condition by face score. The concordance rate of each domain between the 2 platforms was calculated. The internal consistency of Domains I and II of the 2 platforms was assessed using Cronbach alpha coefficients, the concurrent validity of Domains I and II was assessed by calculating Pearson correlation coefficients, and the mean differences between the 2 platforms were assessed using Bland-Altman analysis. RESULTS: In total, 22 participants were recruited; the data of 20 (91%) participants were analyzed. The average age was 65.4 (SD 12.8) years, and 80% (16/20) of the participants were women. The concordance rate of Domains I, II, and III between the paper-based and app-based JACQLQ was 0.78, 0.85, and 0.90, respectively. The internal consistency of Domains I and II between the 2 platforms was satisfactory (Cronbach alpha of .964 and .919, respectively). Pearson correlation analysis yielded a significant positive correlation between Domains I and II across the 2 platforms (r=0.920 and r=0.968, respectively). The mean difference in Domains I and II between the 2 platforms was 3.35 units (95% limits of agreement: -6.51 to 13.2). CONCLUSIONS: Our findings indicate that AllerSearch is a valid and reliable tool for the collection of electronic patient-reported outcomes to assess hay fever, contributing to the advantages of the mHealth platform.