En_Línea. An online treatment to change lifestyle in overweight and obesity: study protocol for a randomized controlled trial

Investigating psychological variables for technologies promoting physical activity

Background

Many technological interventions designed to promote physical activity (PA) have limited efficacy and appear to lack important factors that could increase engagement. This may be due to a discrepancy between research conducted in this space, and software designers' and developers' use of this research to inform new digital applications.

Objectives

This study aimed to identify (1) what are the variables that act as barriers and facilitators to PA and (2) which PA variables are currently considered in the design of technologies promoting PA including psychological, physical, and personal/contextual ones which are critical in promoting PA. We emphasize psychological variables in this work because of their sparse and often simplistic integration in digital applications for PA.

Methods

We conducted two systematized reviews on PA variables, using PsycInfo and Association for Computing Machinery Digital Libraries for objectives 1 and 2.

Results

We identified 38 PA variables (mostly psychological ones) including barriers/facilitators in the literature. 17 of those variables were considered when developing digital applications for PA. Only few studies evaluate PA levels in relation to these variables. The same barriers are reported for all weight groups, though some barriers are stronger in people with obesity.

Conclusions

We identify PA variables and illustrate the lack of consideration of these in the design of PA technologies. Digital applications to promote PA may have limited efficacy if they do not address variables acting as facilitators or barriers to participation in PA, and that are important to people representing a range of body weight characteristics.

The Direct Medical Cost of Acute Appendicitis Surgery in a Resource-Limited Setting of Papua New Guinea

BACKGROUND

Acute appendicitis is a common surgical emergency, and challenges in access to surgery in a low middle-income country can direct cost implications.

METHODS

A prospective cost of illness study was conducted at Alotau Provincial Hospital (APH) from October 14, 2019, to June 1, 2020. A bottom-up approach of microcosting was used to estimate the direct medical cost of consecutive patients with acute appendicitis undergoing surgery.

RESULTS

The mean cost of acute appendicitis surgery for each patient was K39,517.66 (US$11,460.12) for uncomplicated appendicitis, K45,873.99 (US$13,303.46) for complicated appendicitis and K38,838.80 (US$ 11,263.25) for a normal appendix. In total, the direct medical cost for acute appendicitis in this study was K4,562,625.29 (US$ 1,323,161.33) with the majority of expenditure incurred by surgical ward expenses.

CONCLUSION

This study demonstrates that direct medical costs for uncomplicated appendicitis surgery in a resource-limited hospital are less expensive. As the pathology progresses, the cost also exponentially increases. Policy makers and clinicians must establish appropriate curative surgical services at secondary (NOM of acute appendicitis and laparoscopic surgery) and primary health-care levels to address acute appendicitis surgery as this can reduce costs.