Posts Tagged ‘Canada’
Annual mammography failed to reduce breast cancer mortality in women, ages 40 to 59, compared with physical examination or routine care, according to 25-year follow-up data from a Canadian screening program.
Women screened annually by mammography for 5 years had had a breast cancer mortality hazard of 1.05 compared with the control group during the screening period. During follow-up for a mean of 22 years, the mammography group had a breast cancer mortality hazard of 0.99 versus the control group. Neither value was statistically significant…
The findings suggest a need to reassess the value of screening mammography…
The publication drew a quick and forceful response from the American College of Radiology (ACR) and the Society of Breast Imaging (SBI). In a joint statement, officials of the two organizations characterized the results as “an incredibly misleading analysis based on the deeply flawed and widely discredited Canadian National Breast Screening Study (CNBSS).”
Noting the 32% rate of cancer detection by mammography, the ACR and SBI said “this extremely low number is consistent with poor-quality mammography.” Mammography alone should detect twice that many cancers, they added. The organizations noted that a prior outside review of the CNBSS confirmed the poor quality of mammography in the study…
Dr. Anthony Miller and colleagues reported 25-year follow-up data from the CNBSS, which began in 1980. All women, ages 50 to 59, had annual clinical breast examinations, as did women 40 to 49 in the mammography arm. Younger women in the control arm had a clinical breast exam at enrollment, followed by usual care.
The study included 89,835 women enrolled at 15 centers in six Canadian provinces. During the 5-year mammographic-screening period, 666 invasive cancers were diagnosed in the mammography arm and 524 in the control group. During the 25-year follow-up period, 180 women randomized to mammography died of breast cancer, as did 171 in the control group.
The hazard ratio (HR) for breast cancer-specific mortality during the screening period was 1.05 for mammography versus control…
The authors of an accompanying editorial noted that some evidence suggests that improved treatment, rather than breast cancer screening, has fueled the decline in breast cancer mortality in recent years. Regardless of the rates found in different studies, overdiagnosis represents a larger problem…
Referring directly to the ACR and SBI, Miller said the study’s outcome “has to be unwelcome to this highly financially conflicted group, but which will be of substantial interest to policy makers in considering the future of screening for breast cancer.”
Been a spell since I’ve been involved with folks working in oncology. Just as long since I’ve dedicated sufficient reading and online investigation to have an opinion I’d risk someone’s life on.
Please, read the whole article. There are answers – and answers to questions raised by the answers.
Canadian researchers said a message in a bottle revealed a rock cairn located 333 feet from a glacier was only 3.9 feet away in 1959.
Warwick Vincent, who led a team of scientists studying at Laval University’s remote research station in Ward Hunt Island, one of the most northerly pieces of Canadian land, said the team discovered a message in a bottle placed on a cairn of rocks that appeared to have been built by humans, the Canadian Broadcasting Corp. reported Tuesday.
“It was really quite extraordinary to be holding that piece of paper in my hands,” Vincent was quoted as saying.
The note was written by U.S. geologist Paul T. Walker and dated July 10, 1959. It asked whoever discovered the message to measure the distance between a nearby cairn and a glacier, a distance of only 3.9 feet when the letter was written.
The distance between the cairn and glacier has since grown to 333 feet, the researchers said.
Walker died at the age of 27 only a few months after writing the note…
Vincent said he and his team added another note to the bottle in the hopes of hearing from future visitors.
You have to presume Walker was concerned about the glacier melting, retreating. If it had continued normal glaciation and expansion, the cairn wouldn’t be visible today.
Foresight in a society that still doesn’t value science or the predictive nature of scientific analysis.
Who’s that knocking at my door? I’ll open it and look.
An Alberta man who stabbed a friend in the chest as a test for what turned out to be an ineffective stab-proof vest was sentenced to six months in jail.
Calvin Clackson, 21, of Edmonton, pleaded guilty Tuesday to criminal negligence causing bodily harm in the Oct. 15, 2012, incident that required friend Justin Harder, 18, to undergo emergency surgery for a bleeding chest wound…
The court heard Harder had been wearing a purportedly stab-proof vest and invited Clackson to test it out with a folding knife.
“Unfortunately, the vest didn’t work and the knife went through the vest and into the chest cavity and Mr. Harder was seriously injured,” prosecutor Mark Huyser-Wierenga said.
Provincial Court Judge Michael Allen said the stabbing was a serious incident that could have been worse.
“It was foolish for the friend to offer the invitation,” Allen said. “It was criminally negligent for the accused to take up the invitation.
Canada has given the go-ahead to commercial production of genetically modified salmon eggs, bringing the world’s first GM food animal closer to supermarkets and dinner tables.
…Environment Canada said it had granted a US biotechnology firm, AquaBounty Technologies permission to export up to 100,000 GM fish eggs a year from a hatchery in Prince Edward Island to a site high in the Panamanian rainforest.
The decision marked the first time any government had given the go-ahead to commercial scale production involving a GM food animal.
The move clears the way for AquaBounty to scale up production of the salmon at its sites in PEI and Panama in anticipation of eventual approval by American authorities…
AquaBounty has been raising GM salmon for several years on an experimental basis, growing fish eggs at a lab in PEI and then flying them to a ramshackle test site at a secretive inland location in the Panamanian rainforest, where they were grown to full size, and then ultimately destroyed.
The GM fish splices growth genes from a Chinook salmon and a seal eel onto an Atlantic salmon – which AquaBounty claims enables the altered animal to grow twice as fast as a regular fish…
The company has also fought to win over the public to the idea of GM fish. Within the last year, supermarket chains such as Whole Foods and Trader Joes, have said they will not stock GM salmon…
But Stotish said in the statement the company planned to go into commercial production once those other approvals are in place.
About as overdue as any science-based product facing irrational fear and superstition might be. Aside from folks never having been able to distinguish any difference between like-prepared samples of these salmon and other quality spec farm-raised varieties, there hasn’t been any peer-reviewed science that demonstrated differences – dangerous or otherwise – about these salmon.
Cripes, the Luddites probably wouldn’t eat any kind of eel on their own either.
What can you say about cigarette butts? They instantly make wherever they are look seedy, they don’t biodegrade, plus they’re highly toxic to aquatic organisms. It turns out, however, that they are good for something. The City of Vancouver and TerraCycle Canada launched a first-of-its-kind pilot program this Tuesday, in which the butts will be collected for recycling.
As part of the Cigarette Waste Brigade program, 110 cigarette recycling receptacles have been installed on several blocks in downtown Vancouver. The idea is that besides keeping the butts out of landfills, they also won’t be littering the streets. People are additionally being encouraged to save up butts in their home or workplace, then send them in for processing.
And no, they’re not being recycled into new cigarette butts. Instead, the cellulose acetate in their filters is being used in the production of industrial products such as shipping pallets. Additionally, tobacco extracted from them will be composted.
Incidentally, in a study conducted at China’s Xi’an Jiaotong University, it was found that discarded cigarette butts could also be used for rust-proofing steel.
The Cigarette Waste Brigade program is part of the Greenest City 2020 Action Plan, in which Vancouver is aiming to become the greenest city in the world by the year 2020. That plan has also included construction of the LEED-certified Vancouver Convention and Exhibition Center, the introduction of a car-sharing program, and the use of recycled plastic in road asphalt.
Vancouver rocks! If they weren’t sitting on an earthquake fault, I might be living there.
Sometimes, we get angry being stuck in traffic. We might be fuming about the person playing on their cellphone that rear-ended someone, or we might blame the person poking along in the left lane. And yes, sometimes, we might just blame the oppressive injustice doled out by traffic lights, particularly when we hit every… single… red.
But a researcher from the University of Toronto named Samah El-Tantawy might have a solution to at least the traffic light issues. As part of a pilot program in Toronto and Cairo, El-Tantawy installed a sort of artificial intelligence system in the lights that allows them to communicate with each other through decision-making strategies rooted in game theory to manage the traffic flow, rather than rely on algorithms from a central command center…
In Toronto, the effect of El-Tantawy’s lights on just 60 city intersections reduced traffic by about 40 percent and cut down on travel times by just over a quarter. It’s unclear what the effects were in Cairo.
Still, the chances of having our travel times cut down by up to 25 percent and the environmental implications of slashing traffic delays by 40 percent, make the idea of these autonomous traffic lights something we’d like to see in our own cities. I for one welcome our new traffic light overlords…
More detailed coverage of the trial is found over here.
Why am I not surprised that logic and science haven’t been applied in this manner before?
City staff says vandals are responsible for trimming a shrub to look like a phallic symbol on the waterfront.
Workers on Wednesday moved quickly to fix the three-metre tall shrub…A photo of the shrub was first posted on an online blog sometime Wednesday.
The city made changes after CBC News brought it to the city’s attention.
Cathy Masterson, the manager of cultural affairs, said the city was unaware of the situation until CBC News emailed her a photo…
Mayor Eddie Francis was not happy when CBC News informed him of the prank.
Staff trimmed the bush into what Masterson called a “more traditional shrub shape.”…Workers cut the shrub back to its trunk in some parts.