Internal consistency reliability is the degree of correlation between a scale's items. Internal consistency is calculated by Kuder-Richardson's formula 20 for dichotomous choices and Cronbach's alpha for polytomous items. 0.70 to 0.90 internal consistency is acceptable. 5-25 participants are needed for each item when computing the internal consistency of a twenty-item scale. Internal consistency varies according to population and then it is necessary to report it always that scale is used.

This study aimed to assess the prevalence and variables related to perceived stress associated with the COVID-19 pandemic in a sample of Colombian adults using a designed online cross-sectional survey. Adults answered a version of the Perceived Stress Scale (PSS-10) modified for COVID-19 (PSS-10-C), with Cronbach alpha equal to 0.86. In total, 406 individuals aged between 19 and 88 years (M = 43.9; SD = 12.4) agreed to participate in the survey: 61.8% were females, 90.6% had a university degree, 44.1% were health professionals, and 45.7% considered public health policies for preventing the spread of the disease inconsistent with scientific recommendations. PSS-10-C scores ranged from 0 to 36 (M = 16.5; SD = 7.3); 58 individuals (14.3%) scored for high perceived stress (cut-off point = 25). The inconsistency between policies and scientific evidence was significantly related to high perception of stress associated with COVID-19 (OR = 2.36; 95%CI: 1.32-4.20), after adjusting for gender. We concluded that the study group presented the prevalence of perceived stress associated with COVID-19 at high levels, arising from the inconsistent strategies developed by health authorities in view of scientific recommendations. Further researches must address the psychosocial aspects of epidemics.

The study aimed to estimate the high suicide risk during the COVID-19 lockdown in the Colombian population. A total of 700 adults aged between 18 and 76 years (M = 37.1, SD = 12.7; 68.0% women) completed an online questionnaire. Findings showed that 7.6% of participants reported a high suicide risk. High suicide risk was associated with high perceived stress related to COVID-19, risk of depressive episode, and insomnia. Our study suggests that 1 out of 13 Colombians in a non-probability sample reports a high suicide risk during COVID-19. Findings need to be corroborated in a representative sample of Colombians.

Introduction: The COVID pandemic has had a high psychological impact on healthy populations. Increased levels of perceived stress, depression, and insomnia are expected, especially in people with pre-existing medical conditions, such as asthma and chronic obstructive pulmonary disease (COPD), who seem to be particularly vulnerable. However, the difference in psychological distress frequency between asthma and COPD patients is unknown. Objective: To compare the prevalence of depression, perceived stress related to COVID, post-traumatic stress, and insomnia in asthma and COPD patients at a pulmonology clinic in Santa Marta, Colombia. Methods: A cross-sectional study was designed. The patients were contacted by telephone. An electronic link was sent to those who accepted. The questionnaire asked for perceived stress related to COVID-19, post-traumatic stress symptoms, depressive symptoms, and insomnia risk. Results: 148 asthma patients and 144 COPD patients participated in, between 18 and 96 years. The prevalence of high COVID-19 perceived stress was 10.6% (n = 31); post-traumatic stress risk, 11.3% (n = 33); depression risk, 31.5% (n = 92); and insomnia risk, 57.7% (n = 169). No significant differences were found between asthma and COPD in indicators of psychological distress. Conclusions: Asthma and COPD patients present similar frequencies of depression risk, COVID-19 perceived stress, post-traumatic stress risk, and insomnia risk during the Colombian lockdown. It is essential to evaluate and manage psychological distress among asthma and COPD patients. It can reduce the risk of exacerbation and improve the quality of life.