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03-09-2015, 07:30 AM | #316 | |
Resident Yorkie Nut Donating YT 20K Club Member Join Date: Sep 2006 Location: Texas
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03-09-2015, 09:05 AM | #317 | |
YT 2000 Club Donating Member | Quote:
Thanks Phil. I will read the PDF tonight. Any comments on its methodology? Has this study been peer-reviewed?
__________________ Razzle and Dara. Our clan. RIP Karma Dec 24th 2004-July 14 2013 RIP Zoey Jun9 th 2008-May 12 2012. RIP Magic,Mar 26 2006July 1st 2018 | |
03-09-2015, 09:35 AM | #318 | |
YT 3000 Club Member Join Date: Apr 2013 Location: Urbana, IL USA
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Materials and Methods The insurance process, benefits and limitations of using insurance data in veterinary research has earlier been described in detail (Egenvall et al. 2000, 2009). The Agria Insurance database contains data from over 260 000 female dogs (≤10 years). In the present study, female dogs enrolled for both veterinary care and life insurance during 1995–2006 were included. Each year a dog was insured contributed to one dog-year at risk (DYAR). All insured bitches were considered at potential risk for developing pyometra. Variables used were: gender, breed, date of birth, dates when dogs entered or left the insurance program, information on the type of insurance for which dogs were enrolled, and whether claims were reimbursed. Breeds were classified according to the Swedish Kennel Club breed classification system. If dogs had reimbursed claims for pyometra, they were considered as pyometra-cases and likewise for MTs. The crude- and breed-specific proportions (percentages) of dogs that had insurance claims for pyometra or MTs up to certain ages (6, 8, and 10 years) were calculated using the base-line survival statement from Cox regression (without independent variables). Incidence rates, crude and breed-specific mean ages were calculated for development of pyometra and MTs and either or both of the two diseases. ... Results The database contained data from over 260 000 female dogs, resulting in just over 1 000 000 DYAR calculated for dogs up to 10 years of age. There were 110 breeds with over 1000 DYAR in the database, constituting the basis for the analyses. ... Discussion It is common practise to insure dogs in Sweden and approximately 40% of all dogs are covered by Agria Insurance. Approximately 90% (all ages) of the Swedish dog population is intact, hence most dogs are susceptible to reproductive organ disease (Egenvall et al. 1999). The Agria database thus offers unique possibilities for studies concerning such diseases. The incidences of pyometra and MTs have been shown to vary between different breeds, suggesting a genetic background (Egenvall et al. 2001; Rivera et al. 2009). The overall proportion of dogs that had developed pyometra in this study was slightly lower (19%) than previously reported (23–24%) which possibly reflects that more low-risk breeds were included in the present study (Egenvall et al. 2001). Although based on different study periods, the overall proportion of dogs developing MTs in the present study was 13%, which is the same as in a previous report (Egenvall et al. 2005). ... Elective spaying is commonly performed in many countries, and will prevent development of pyometra, and depending on at which age the surgery is performed, also have a protective effect for MTs (Schneider et al. 1969). However, recently the protective effects by spaying on MT development have been questioned (Beauvais et al. 2012). In the present study, high incidences (up to 73%) of pyometra and MTs were demonstrated in some giant and large breeds of which are commonly affected by post spaying urinary incontinence (Thrusfield et al. 1998). Since the pros and cons of elective spaying will vary by breed, knowledge of breed-variations will be clinically useful in the decision process for each dog. Due to insurance age limitations, only data from dogs up to 10 years of age are included in the database, which is a study limitation. The true mean ages of diagnosis and incidences are likely to be higher and larger, respectively, and especially in breeds with long life expectancy. | |
03-09-2015, 09:43 AM | #319 | |
Yorkie mom of 4 Donating YT Member Join Date: Feb 2008 Location: LaPlata, Md
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__________________ Taylor My babies Joey, Penny ,Ollie & Dixie Callie Mae, you will forever be in my heart! | |
03-09-2015, 10:25 AM | #320 | |
aka ♥SquishyFace♥ Donating Member Join Date: Jul 2014 Location: n/a
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03-09-2015, 10:30 AM | #321 |
Yorkie mom of 4 Donating YT Member Join Date: Feb 2008 Location: LaPlata, Md
Posts: 23,247
| Science proves that cancer is on the rise so not sure how you disagree with that but ok.
__________________ Taylor My babies Joey, Penny ,Ollie & Dixie Callie Mae, you will forever be in my heart! |
03-09-2015, 10:31 AM | #322 | |
aka ♥SquishyFace♥ Donating Member Join Date: Jul 2014 Location: n/a
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It is interesting, the sample population which has been used, and I would argue that there are more limitations than just this... Additionally, cancer is always going to be found at higher incidence rates as a correlation with age in canines as well as people. Therefore, I'd argue that the diagnosis/incidence rates re: this is a moot point. It seems like there is a lot of information which is missing. The more I read from this article - the more questions I have... Interesting all around, though! | |
03-09-2015, 10:42 AM | #323 |
YT 2000 Club Donating Member | Given that insurance companies usually keep quite extensive databases, surely one could have peeled down through the layers, and found out against each breed - when if ever a female was spayed, had she had any litters etc. And why only look at 2 cancers - when you have an abundant wealth of data available to you? I would have loved to seen the rate of hemangiosarcomas and osteosarcomas. As well as ovarian cancers, uterine cancers, bladder, kidney et al.
__________________ Razzle and Dara. Our clan. RIP Karma Dec 24th 2004-July 14 2013 RIP Zoey Jun9 th 2008-May 12 2012. RIP Magic,Mar 26 2006July 1st 2018 |
03-09-2015, 10:46 AM | #324 |
aka ♥SquishyFace♥ Donating Member Join Date: Jul 2014 Location: n/a
Posts: 1,875
| Also, we cannot generalize on the basis of ONE study. What supporting studies have been made? What contradictory information is there? Are we to assume none? Science doesn't make assumptions. If there is no further data, apart from this one study, then the study is not complete. That is the nature of science and that is why I would say take the results with a grain of salt i.e. extreme caution. ALSO, having worked for an insurance company, there needs to be a declaration of BIAS. Of course, it helps to sell policies when studies are generated to increase fear of risk. That is the nature of insurance for risk averse populations. If there is no fear of risk, there is no premium! I'm done for now - I'm distracted by the smell of chicken dinner. |
03-09-2015, 10:51 AM | #325 | |
Yorkie mom of 4 Donating YT Member Join Date: Feb 2008 Location: LaPlata, Md
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__________________ Taylor My babies Joey, Penny ,Ollie & Dixie Callie Mae, you will forever be in my heart! | |
03-09-2015, 10:56 AM | #326 | |
YT 3000 Club Member Join Date: Apr 2013 Location: Urbana, IL USA
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03-09-2015, 11:03 AM | #327 | |
YT 3000 Club Member Join Date: Apr 2013 Location: Urbana, IL USA
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I don't mean to be snarky, but I've quoted a lot of the study, and if you are a scientist at an institution with a subscription, you can view the entire article. Or, if you PM me with your email address, I can send you the PDF. | |
03-09-2015, 11:04 AM | #328 |
Donating YT Addict Join Date: Aug 2010 Location: SW USA
Posts: 2,505
| SirTeddy Hope the chicken is good. The more references I read the more confused I am. It does seem that the above mentioned issues are important in intact dogs, but aren't there some health benefits from not neutering? There are pros and cons and we have to look at the whole picture. IDK!! In the US we do generally neuter, what is the situation in the UK? Last edited by dottiesyrky; 03-09-2015 at 11:06 AM. |
03-09-2015, 11:09 AM | #329 | ||
aka ♥SquishyFace♥ Donating Member Join Date: Jul 2014 Location: n/a
Posts: 1,875
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Hiya, I don't believe we have directly communicated before! Someone else has kindly offered to send me the full study so that I can read it in its entirety, thanks! Don't worry about offending me! I am not easily offended. As mentioned before, this is ONE study and as a researcher, I can say that one study would never be used to make a conclusive point in any scientific discipline. The imbalance of information is just ONE limitation of presenting this article and attempting to make generalizations from the information contained within. I'm a researcher so I'm hardcore when it comes to criticism! I appreciate it, actually. It helps me develop! Quote:
Hi Dottie xx The overall consensus is that it is good to spay and neuter pets due to the shelters which are overpopulated. Individual advice from vets which I, and others have received, has been that there is no health benefit to intact MALES to be neutered. I have not had any direct advice re: females and I research with lab mice which are never spayed or neutered unless there is something specific under investigation | ||
03-09-2015, 11:10 AM | #330 | |
YT 3000 Club Member Join Date: Apr 2013 Location: Urbana, IL USA
Posts: 3,648
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And here is the missing declaration of bias: Conflicts of interest None of the authors have any conflicts of interest to declare. Here is the statement of funding: Acknowledgements Agria Pet Insurance kindly allowed us to use their database. Financial support was provided by Thure F. and Karin Forsbergs Research Foundation, M. Forsgrens Research Foundation and Agria Insurance and The Swedish Kennel Club Research Foundation. BTW, it could be argued that since insurance companies really hate to pay claims unless they have to, that's another reason why these data could under-report the true rates of pyometra and mammary tumors. | |
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