Elizabeth A. Stuart

Source: Statist. Sci., Volume 25, Number 1, 1--21.

Abstract:
When estimating causal effects using observational data, it is desirable to replicate a randomized experiment as closely as possible by obtaining treated and control groups with similar covariate distributions. This goal can often be achieved by choosing well-matched samples of the original treated and control groups, thereby reducing bias due to the covariates. Since the 1970s, work on matching methods has examined how to best choose treated and control subjects for comparison. Matching methods are gaining popularity in fields such as economics, epidemiology, medicine and political science. However, until now the literature and related advice has been scattered across disciplines. Researchers who are interested in using matching methods—or developing methods related to matching—do not have a single place to turn to learn about past and current research. This paper provides a structure for thinking about matching methods and guidance on their use, coalescing the existing research (both old and new) and providing a summary of where the literature on matching methods is now and where it should be headed.

Veteran forward Kelly Babstock signed with the new Toronto franchise of the National Women's Hockey League on Saturday. The two-time all-star has 27 goals and 60 points in 65 games over four seasons.

OM is known for action, not reflection; for pioneering, not reminiscing. Still, we are wise to celebrate milestones and learn from our past, whatever will serve us well for today and tomorrow.

Erling Braut Haaland and Robert Lewandowski continued to hit the net, although injury means the latter is likely to miss the second leg.

We introduce the power and resources released by change. We walk our teachers to the edge of a new world for teaching and learning, step off together and lead while we learn beside our teachers.

Interestingly, foreign portfolio investors (FPI), who were big sellers in March pulling out more than $8 billion, and have offloaded shares for most of April, turned buyers picking up some $50 million worth of stocks.

On the government’s part, these include NEMMP (National Electric Mobility Mission Plan) and FAME II (Faster Adoption and Manufacturing of Hybrid and Electric vehicles).

The Moto G5 Plus launches tomorrow, reskindling the budget wars in India. For budget buyers, there are actually quite a few options coming up soon, including the three new smartphones from Nokia. Here, take a look.

A new roadmap for the future of Ohio’s electric grid can benefit all types of interest groups, but the next few years will be critical for the plan to achieve its goals.

A recent announcement published by Bulawayo 24 indicates several hydro projects are moving forward in Zambia.

Less than two weeks after 175 nations signed the pivotal Paris Agreement on climate change, a question lingers: What happens now?

Less than two weeks after 175 nations signed the pivotal Paris Agreement on climate change, a question lingers: What happens now?

On 12 March 2018, the European Commission (the “Commission”) published legislative proposals for new rules on marketing AIFs and UCITS comprising: a Directive on the cross-border distribution of collective investment funds (COM(2018) 92...

2019 was the year that the new regulatory landscape for Higher Education came to fruition.  Although the Office for Students (OfS) was established on 1 January 2018, it was not until 1 August 2019 that all its powers were fully implemented. So ...

Whether this summer will include the usual beach parties and live concerts is still uncertain but a group of Cypriot friends studying in Aberdeen are determined to bring back the island’s summer party mood, and if the coronavirus situation allows are organising a post-lockdown fiesta. Are the public ready? The...

The post Forward planning for post-lockdown fiesta appeared first on Cyprus Mail.

The Premier League got a glimpse of what the future might hold after football finally returned with the start of the South Korean K-League on Friday. It was football, but just not as we know it as reigning champions Jeonbuk Motors beat Suwon Bluewings 1-0 in an empty World Cup...

The post S. Korea shows way forward for Premier League as football returns appeared first on Cyprus Mail.

A forward-looking, regional approach is needed for countries in Central Asia to respond to the pandemic and prepare for future public health threats.

Title: Study Recommends Putting Your Left Face Forward
Category: Health News
Created: 4/27/2012 6:06:00 PM
Last Editorial Review: 4/30/2012 12:00:00 AM

Title: States Move Forward With Plans to Reopen as Coronavirus Case Count Passes 930,000
Category: Health News
Created: 4/26/2020 12:00:00 AM
Last Editorial Review: 4/27/2020 12:00:00 AM

For decades inhaled corticosteroids have been central to the management of asthma and are proven to be effective in maintaining symptom control, reducing exacerbations and preserving quality of life through mediation of airway inflammation. However, a small minority of patients have disease which is refractory to high dose inhaled corticosteroid (ICS) therapy and require additional oral corticosteroids to achieve acceptable control of symptoms and exacerbations. Severe asthma represents less than 10% of the total asthma population [1] but is the most serious, life-affecting and costly form of the condition [2].

Group II introns are mobile genetic elements that perform both self-splicing and intron mobility reactions. These ribozymes are comprised of a catalytic RNA core that binds to an intron-encoded protein (IEP) to form a ribonucleoprotein (RNP) complex. Splicing proceeds through two competing reactions: hydrolysis or branching. Group IIC intron ribozymes have a minimal RNA architecture, and splice almost exclusively through hydrolysis in ribozyme reactions. Addition of the IEP allows the splicing reaction to form branched lariat RNPs capable of intron mobility. Here we examine ribozyme splicing, IEP-dependent splicing, and mobility reactions of a group IIC intron from the thermophilic bacterium Thermoanerobacter italicus (Ta.it.I1). We show that Ta.it.I1 is highly active for ribozyme activity, forming linear hydrolytic intron products. Addition of purified IEP switches activity to the canonical lariat forming splicing reaction. We demonstrate that the Ta.it.I1 group IIC intron coordinates the progression of the forward splicing reaction through a –' interaction between intron domains II and VI. We further show that branched splicing is supported in the absence of the IEP when the –' interaction is mutated. We also investigated the regulation of the two steps of reverse splicing during intron mobility into DNA substrates. Using a fluorescent mobility assay that simultaneously visualizes all steps of intron integration into DNA, we show that completion of reverse splicing is tightly coupled to cDNA synthesis regardless of mutation of the –' interaction.

Hearing the kingdom’s cry for help, these developers are offering their resources to everyone in need.

Tara Reade addressed her past praise for Joe Biden during an interview released on Friday as well as her cryptic "tic toc" tweet skeptics have pointed to while assessing her claims. 

A new poll from Montana State University shows Democratic Gov. Steve Bullock leading incumbent GOP Sen. Steve Daines, and Joe Biden inching toward President Trump's lead.

Tottenham forward Son Heung-min finished his three-week military training in South Korea on Friday and was right near the top of the class.

Rookie phenom Connor Bedard is the headliner of a workmanlike forward group that's looking to come of age with the Regina Pats.

Boris Johnson could ditch the Government's "stay at home" slogan ahead of an expected easing of restrictions next week, it has been reported.

Entertainment One has signed a first-look agreement with producer and former Marvel Studios executive Jeremy Latcham, with "Dungeons & Dragons" as the first project under the deal. Entertainment One made the announcement Wednesday, noting that the partnership with Latcham follows eOne’s acquisition by Hasbro earlier this year and will further power eOne’s ability to produce […]

Washington Capitals forward Brendan Leipsic suddenly finds himself in hot water. A private group chat featuring Leipsic was leaked on Wednesday, including misogynistic comments made by the NHLer.

He called Exotic 'unbelievably cruel'

Chelsea forward Pedro says he has "many offers" but is waiting to speak to the club about his future beyond the end of the season.

Former Chelsea forward Salomon Kalou has been suspended by Hertha Berlin after appearing to intentionally flout social distancing rules live on social media.

Former Barcelona forward Bojan Krkic believes Liverpool's Roberto Firmino would be the perfect link-up man for his former side.

This organic farming program is turning residential backyards into market gardens to tackle food security, food mileage and social isolation.

NHLers aren’t used to being off skates this long but Kerfoot thinks they’ll have time to get up to speed.

UCLA-bound hurdles standout Aiden Lieb envisions a future teaching others: 'I want to be that support system that believes in young athletes.'

Vanessa Bryant opened a card from her late husband Kobe on her birthday. "It gave me something to look forward to today," she writes.

Boris Johnson will chair a Cabinet meeting on Thursday and is expected to announce a lifting of some measures on Sunday.

With a return to training thought to be imminent ahead of Monday's Project Restart meeting between all 20 Premier League clubs, Klopp is already desperate to greet his stars.

Young Adelaide Crows forward Tyson Stengle has been reported for drink driving after he recorded a blood alcohol reading of 0.125. He is the second AFL player to be caught up in a drink driving offence in the last 24 hours.

I have every expectation that our criminal defense system can, and will, be a source of tremendous national pride. And I know that achieving this requires the best that we, as a profession and as a people, have to offer.

Swiss-based freight forwarder Panalpina Inc. has agreed to pay the United States $375,000 to settle allegations that the company paid kickbacks to employees of Kellogg Brown & Root Inc. (KBR).

Six international freight forwarders have agreed to plead guilty and to pay criminal fines totaling $50.27 million for their roles in several conspiracies to fix a variety of fees and charges in connection with the provision of freight forwarding services for international air cargo shipments.

A global freight forwarding company, as well as five oil and gas service companies and subsidiaries, have all agreed to resolve investigations of Foreign Corrupt Practices Act violations.