Longitudinal demographic data collection

2021 ◽  
pp. 97-114
Author(s):  
Marlène Gamelon ◽  
Josh A. Firth ◽  
Mathilde Le Moullec ◽  
William K. Petry ◽  
Roberto Salguero-Gómez
Keyword(s):  
Demographic Data ◽  
Field Studies ◽  
Imperfect Detection ◽  
Individual Level ◽  
Mobile Species ◽  
Annual Population ◽  
Reproductive Rates ◽  
The Individual ◽  
Term Field

Several long-term field studies are running worldwide on many taxa across the Tree of Life. These longitudinal studies involve several visits to the study population with repeated observations/measurements. Demographic data can be collected at the population level (e.g. time series of population counts) or at the individual level (e.g. monitoring of marked and/or georeferenced individuals throughout their life). These data are then used to estimate demographic parameters such as annual population abundances, survival, growth, and reproductive rates. This chapter introduces the reader to monitoring methods (including recent technologies) that can be implemented in the field to collect specific demographic data on mobile species (e.g. birds, mammals) at both the population and individual levels, while dealing with imperfect detection. It also presents the procedures and the type of demographic data that can be collected on sessile species (e.g. corals, plants) at both levels. Finally, the chapter concludes with new aspects, current biases, and arising challenges for future long-term field studies.

scholarly journals Does workplace social capital protect against long-term sickness absence? Linking workplace aggregated social capital to sickness absence registry data

2017 ◽  
Vol 46 (3) ◽  
pp. 290-296 ◽  
Author(s):  
Anne-Sophie K. Hansen ◽  
Ida E. H. Madsen ◽  
Sannie Vester Thorsen ◽  
Ole Melkevik ◽  
Jakob Bue Bjørner ◽  
...  
Keyword(s):  
Social Capital ◽  
Private Sector ◽  
Sickness Absence ◽  
Collective Good ◽  
Standard Deviation Increase ◽  
Individual Level ◽  
The Individual ◽  
Adjusted Model ◽  
Workplace Social Capital

Aims: Most previous prospective studies have examined workplace social capital as a resource of the individual. However, literature suggests that social capital is a collective good. In the present study we examined whether a high level of workplace aggregated social capital (WASC) predicts a decreased risk of individual-level long-term sickness absence (LTSA) in Danish private sector employees. Methods: A sample of 2043 employees (aged 18–64 years, 38.5% women) from 260 Danish private-sector companies filled in a questionnaire on workplace social capital and covariates. WASC was calculated by assigning the company-averaged social capital score to all employees of each company. We derived LTSA, defined as sickness absence of more than three weeks, from a national register. We examined if WASC predicted employee LTSA using multilevel survival analyses, while excluding participants with LTSA in the three months preceding baseline. Results: We found no statistically significant association in any of the analyses. The hazard ratio for LTSA in the fully adjusted model was 0.93 (95% CI 0.77–1.13) per one standard deviation increase in WASC. When using WASC as a categorical exposure we found a statistically non-significant tendency towards a decreased risk of LTSA in employees with medium WASC (fully adjusted model: HR 0.78 (95% CI 0.48–1.27)). Post hoc analyses with workplace social capital as a resource of the individual showed similar results. Conclusions: WASC did not predict LTSA in this sample of Danish private-sector employees.

scholarly journals Factors Associated with Perceived Trust of False Abortion Websites: A Cross-Sectional Online Survey (Preprint)

2020 ◽  
Author(s):  
Sarina Rebecca Chaiken ◽  
Lisa Han ◽  
Blair G Darney ◽  
Leo Han
Keyword(s):  
Online Survey ◽  
Demographic Data ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Correlation Matrices ◽  
Individual Level ◽  
Perceived Trust ◽  
Neutral Site ◽  
Design Characteristics ◽  
The Individual

BACKGROUND The majority of patients use the internet to search for health information. While there is a vast repository of searchable information online, much of the content is unregulated and therefore potentially incorrect, conflicting, or confusing. Abortion information online is particularly prone to being inaccurate as anti-choice websites publish purposefully misleading information in formats that appear as neutral resources. To understand how anti-choice websites appear neutral, we need to understand the specific website features of anti-choice features that impart trust to viewers. OBJECTIVE We sought to identify characteristics of false or misleading abortion websites that make these websites appear trustworthy to the public. METHODS We conducted a cross-sectional study using Amazon.com Inc’s Mechanical Turk platform. We used validated questionnaires to ask participants to rate eleven anti-choice sites and one neutral site identified by experts, focusing on site content, creators, and design. We collected socio-demographic data and participant views on abortion. We used a composite measure of “mean overall trust” as our primary outcome. Using correlation matrices, we determined which website characteristics were most associated with overall trust. Finally, we used linear regression to identify participant characteristics associated with overall trust. RESULTS Our analytic sample included 498 participants ranging from ages 22 to 70, 50.1% of whom identified as female. Across eleven anti-choice sites, creator trust (“I believe that the creators of this site are honest and trustworthy”) had the highest correlation coefficient with overall trust (0.70). Professional appearance (0.59), look and feel (0.59), perception that the information is created by experts (0.59), association with a trustworthy organization (0.58), valued features and functionalities (0.54), and interactive capabilities (0.52) all demonstrated strong relationships with overall trust. At the individual level, pro-choice leaning was associated with higher overall trust of the neutral site (B: -0.43, CI: -0.87, 0.01) and lower overall trust of the anti-choice sites (B: 0.52, CI: 0.05, .99). CONCLUSIONS The overall trustworthiness of anti-choice websites is most associated with design characteristics and perceived trustworthiness of the site creator. Those who believe that access to abortion should be limited are more likely to trust anti-choice websites.

scholarly journals The effects of hybrid pay incentives on work-team performance: A longitudinal study

2015 ◽  
Vol 18 (4) ◽  
pp. 463-474
Author(s):  
Mbusi Dlamini ◽  
Margie Sutherland ◽  
Merle Werbeloff
Keyword(s):  
Work Performance ◽  
Field Studies ◽  
Individual Performance ◽  
Work Team ◽  
Team Members ◽  
Incentive Structures ◽  
Improved Performance ◽  
The Individual ◽  
Pay Incentives

Despite the widespread use of pay incentives to drive performance, few studies empirically demonstrate their long-term benefits within work-team settings in field studies; even fewer studies incorporate hybrid pay incentives in their design. This longitudinal field study explored the effects on individual work performance of allocating tellers to teams with supervisors who received hybrid pay incentives, where 60 per cent of their incentive was based on the individual performance of each of their team members and 40 per cent on their own performance. It was conducted on bulk-cash tellers working in 19 centres, using a time-series design. The results, derived from quantitative data collected from 82 individual tellers over 24 months, showed that hybrid pay incentives for supervisors of teams of tellers, some of whom were individually incentivised, were associated with significant increases in the volume, speed and accuracy of deposit processing by all the tellers. The findings empirically demonstrate the long term sustainability of improved performance associated with the introduction of hybrid pay incentive structures within work teams.

Suitability of a young deciduous-dominated forest for American marten and the effects of forest removal

2004 ◽  
Vol 82 (3) ◽  
pp. 423-435 ◽  
Author(s):  
Kim G Poole ◽  
Aswea D Porter ◽  
Andrew de Vries ◽  
Chris Maundrell ◽  
Scott D Grindal ◽  
...  
Keyword(s):  
Populus Tremuloides ◽  
Forest Cover ◽  
Agricultural Land ◽  
Prey Availability ◽  
Population Level ◽  
Home Ranges ◽  
American Marten ◽  
Individual Level ◽  
The Individual

American marten (Martes americana (Turton, 1806)) are generally considered to be reliant upon and most successful in continuous late-successional coniferous forests. By contrast, young seral forests and deciduous-dominated forests are assumed to provide low-quality marten habitat, primarily as a result of insufficient structure, overhead cover, and prey. This study examined a moderate-density population of marten in northeastern British Columbia in what appeared to be comparatively low-quality, deciduous-dominated habitat, overgrown agricultural land primarily consisting of 30- to 40-year-old stands of regenerating trembling aspen (Populus tremuloides Michx.). Over 4 years, we monitored 52 radio-collared marten. The population appeared to be stable, as indicated by large numbers of adults, relatively constant densities, long-term residency of many individuals, low mortality rates, and older age structure. Relatively small home ranges (males, 3.3 km2; females, 2.0 km2) implied good habitat quality and prey availability. Shearing (removal of immature forest cover) of 17% of the study area resulted in home range shifts at the individual level but no detectable impact at the population level. Categorically, marten avoided nonforested cover types and preferred mature coniferous (>25% conifer) stands (7% of the study area) but otherwise appeared to use all forested stands relative to their availability, including extensive use of deciduous-dominated stands and deciduous stands <40 years of age. Thus, these young deciduous forests appeared to have sufficient structure, overhead cover, and prey to maintain moderate densities of resident marten on a long-term basis.

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