THE PSYCHOLOGIST : Women who give birth after IVF may be 66% more likely to suffer a STROKE a year later, major study suggests

Women who give birth after IVF may be 66% more likely to suffer a STROKE a year later, major study suggests

This is a rather misleading study. For a start, it considers only events within one year after birth. It can tell us nothing about women who have had IVF earlier in their lives

Secondly, the controls used were naive. Demographics seemed well controlled for but what about psychological factors? The women who had a stroke may have been chronically anxious and it was the anxiety that caused the stroke and not the IVF

Thirdly, the effect observed was derisorily small. 8 episodes among 100,000 women tells us that the effect was very rare and improbable so hardly worth noticing when considering risk of IVF

Journal abstract appended

Women who give birth after having fertility treatment are more likely to suffer a stroke than those who conceived naturally, a study suggests.

Researchers at Rutgers University in New Jersey, who tracked 30million pregnancies found women who conceived using fertility treatments such as in vitro fertilization (IVF) or intrauterine insemination (IUI), among others, were 66 percent more likely to experience a stroke within a year of giving birth.

They were twice as likely to suffer the deadlier form of a stroke, a hemorrhagic stroke, when there is a bleed in the brain, and 55 percent more likely to suffer an ischemic stroke, caused by a blood clot cutting off blood supply to part of the brain.

Stroke is the number one cause of death among pregnant women, said to be due to the strain pregnancy puts on the body. About 30 out of every 100,000 women who give birth suffer a stroke up to one year after delivery.

It was not immediately clear why women who received fertility treatments were at higher risk, but the researchers said it could be because of the hormone treatments women undergoing the procedures must take, as well as a higher risk for these women that the placenta does not implant properly.

https://www.dailymail.co.uk/health/article-12462201/ivf-women-stroke-risk-pregnancy-rutgers-study.html

Risk of Stroke Hospitalization After Infertility Treatment

Devika Sachdev et al.

Question Is receipt of infertility treatment associated with stroke hospitalization?

Findings In this cohort study of 31 339 991 pregnant individuals who delivered between 2010 and 2018, compared with those who did not receive infertility treatment, those who received infertility treatment had an increased risk of stroke hospitalization within 12 months of delivery, with the risk of hospitalization for hemorrhagic stroke being substantially greater than that for ischemic stroke.

Meaning These findings suggest that infertility treatment is associated with an increased risk of stroke hospitalization within 12 months of delivery; therefore, optimal screening for risk and timely follow-up should be considered to mitigate factors associated with stroke in the antepartum and postpartum periods.

Abstract

Importance Stroke accounts for 7% of pregnancy-related deaths in the US. As the use of infertility treatment is increasing, many studies have sought to characterize the association of infertility treatment with the risk of stroke with mixed results.

Objective To evaluate the risk of hospitalization from hemorrhagic and ischemic strokes in patients who underwent infertility treatment.

Design, Setting, and Participants This population-based, retrospective cohort study used data abstracted from the Nationwide Readmissions Database, which stores data from all-payer hospital inpatient stays from 28 states across the US, from 2010 and 2018. Eligible participants included individuals aged 15 to 54 who had a hospital delivery from January to November in a given calendar year, and any subsequent hospitalizations from January to December in the same calendar year of delivery during the study period. Statistical analysis was performed between November 2022 and April 2023.

Exposure Hospital delivery after infertility treatment (ie, intrauterine insemination, assisted reproductive technology, fertility preservation procedures, or use of a gestational carrier) or after spontaneous conception.

Main Outcomes and Measures The primary outcome was hospitalization for nonfatal stroke (either ischemic or hemorrhagic stroke) within the first calendar year after delivery. Secondary outcomes included risk of stroke hospitalization at less than 30 days, less than 60 days, less than 90 days, and less than 180 days post partum.

Cox proportional hazards regression models were used to estimate associations, which were expressed as hazard ratios (HRs), adjusted for confounders. Effect size estimates were corrected for biases due to exposure misclassification, selection, and unmeasured confounding through a probabilistic bias analysis.

Results Of 31 339 991 patients, 287 813 (0.9%; median [IQR] age, 32.1 [28.5-35.8] years) underwent infertility treatment and 31 052 178 (99.1%; median [IQR] age, 27.7 [23.1-32.0] years) delivered after spontaneous conception. The rate of stroke hospitalization within 12 months of delivery was 37 hospitalizations per 100 000 people (105 patients) among those who received infertility treatment and 29 hospitalizations per 100 000 people (9027 patients) among those who delivered after spontaneous conception (rate difference, 8 hospitalizations per 100 000 people; 95% CI, −6 to 21 hospitalizations per 100 000 people; HR, 1.66; 95% CI, 1.17 to 2.35). The risk of hospitalization for hemorrhagic stroke (adjusted HR, 2.02; 95% CI, 1.13 to 3.61) was greater than that for ischemic stroke (adjusted HR, 1.55; 95% CI, 1.01 to 2.39). The risk of stroke hospitalization increased as the time between delivery and hospitalization for stroke increased, particularly for hemorrhagic strokes. In general, these associations became larger for hemorrhagic stroke and smaller for ischemic stroke following correction for biases.

Conclusions and Relevance In this cohort study, infertility treatment was associated with an increased risk of stroke-related hospitalization within 12 months of delivery; this risk was evident as early as 30 days after delivery. Timely follow-up in the immediate days post partum and continued long-term follow-up should be considered to mitigate stroke risk.

https://jamanetwork.com/journals/jamanetworkopen/fullarticle/2808926

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Background

The essence of conservatism is caution. The essence of Leftism is anger

This blog is written solely by John Ray, who has a Ph.D. degree in psychology and 200+ papers published in the academic journals of the social sciences. It does occasionally comment on issues in psychology but is mainly aimed at giving a conservative psychologist's view on a broad range of topics. There are very few conservative psychologists.

The blog originated in Australia and many (but not most) posts discuss Australian matters. Australians have an unusually good awareness of events outside their own country. Australian newspapers feature news from Britain and the USA not as an afterthought but as a major part of their coverage. So Australians do tend to have a truly Western heart, which is the reason behind the old name for this blog. So events in Australia, Britain and the USA all feature frequently here, plus occasional coverage of other places, particularly Israel.

A primer in American politics for non-Americans:

SCOTUS is the Supreme Court of the United States, the highest court in the land

The "GOP" stands for "Grand Old Party" and refers to the Republican party. The GOP is at present center/Right, while the Democrats have been undergoing a steady drift Leftwards and now have policies similar to mainstream European Leftist parties.

The ideological identity of both parties has however been very fluid -- almost reversing itself over time. In the mid 19th century, the GOP was the party of big government and concern for minorities while the Democrats advertised themselves as "The party of the white man" -- an orientation that lasted into the mid 20th century in the South. The Democrats are still obsessed with race but have now flipped into support for discrimination AGAINST whites.

Was Pope Urban VIII the first Warmist? Below we see him refusing to look through Galileo's telescope. People tend to refuse to consider evidence— if what they might discover contradicts what they believe.

Global warming

Calibrated in whole degrees. Larger graph here

Climate scientist Lennart Bengtsson said. “The warming we have had the last 100 years is so small that if we didn’t have meteorologists and climatologists to measure it we wouldn’t have noticed it at all.”

The term "Fascism" is mostly used by the Left as a brainless term of abuse. But when they do make a serious attempt to define it, they produce very complex and elaborate definitions -- e.g. here and here. In fact, Fascism is simply extreme socialism plus nationalism. But great gyrations are needed to avoid mentioning the first part of that recipe, of course.

Two examples of Leftist racism below (much more here and here):

Beatrice Webb, a founder of the London School of Economics and the Fabian Society, and married to a Labour MP, mused in 1922 on whether when English children were "dying from lack of milk", one should extend "the charitable impulse" to Russian and Chinese children who, if saved this year, might anyway die next. Besides, she continued, there was "the larger question of whether those races are desirable inhabitants" and "obviously" one wouldn't "spend one's available income" on "a Central African negro".

Hugh Dalton, offered the Colonial Office during Attlee's 1945-51 Labour government, turned it down because "I had a horrid vision of pullulating, poverty stricken, diseased nigger communities, for whom one can do nothing in the short run and who, the more one tries to help them, are querulous and ungrateful."

Defensible and indefensible usages of the term "racism"

The book, The authoritarian personality, authored by T.W. Adorno et al. in 1950, has been massively popular among psychologists. It claims that a set of ideas that were popular in the "Progressive"-dominated America of the prewar era were "authoritarian". Leftist regimes always are authoritarian so that claim was not a big problem. What was quite amazing however is that Adorno et al. identified such ideas as "conservative". They were in fact simply popular ideas of the day but ones that had been most heavily promoted by the Left right up until the then-recent WWII. See here for details of prewar "Progressive" thinking.

R.I.P. Augusto Pinochet. Pinochet deposed a law-defying Marxist President at the express and desperate invitation of the Chilean parliament. He pioneered the free-market reforms which Reagan and Thatcher later unleashed to world-changing effect. That he used far-Leftist methods to suppress far-Leftist violence is reasonable if not ideal. The Leftist view that they should have a monopoly of violence and that others should follow the law is a total absurdity which shows only that their hate overcomes their reason

Franklin Delano Roosevelt was a war criminal. Both British and American codebreakers had cracked the Japanese naval code so FDR knew what was coming at Pearl Harbor. But for his own political reasons he warned no-one there. So responsibility for the civilian and military deaths at Pearl Harbor lies with FDR as well as with the Japanese. The huge firepower available at Pearl Harbor, both aboard ship and on land, could have largely neutered the attack. Can you imagine 8 battleships and various lesser craft firing all their AA batteries as the Japanese came in? The Japanese naval airforce would have been annihilated and the war would have been over before it began.

FDR prolonged the Depression. He certainly didn't cure it.

WWII did NOT end the Great Depression. It just concealed it. It in fact made living standards worse

Joe McCarthy was eventually proved right after the fall of the Soviet Union. To accuse anyone of McCarthyism is to accuse them of accuracy!

The KKK was intimately associated with the Democratic party. They ATTACKED Republicans!

People who mention differences in black vs. white IQ are these days almost universally howled down and subjected to the most extreme abuse. I am a psychometrician, however, so I feel obliged to defend the scientific truth of the matter:

The average African adult has about the same IQ as an average white 11-year-old and African Americans (who are partly white in ancestry) average out at a mental age of 14. The American Psychological Association is generally Left-leaning but it is the world's most prestigious body of academic psychologists. And even they have had to concede that sort of gap (one SD) in black vs. white average IQ. 11-year olds can do a lot of things but they also have their limits and there are times when such limits need to be allowed for.

America's uncivil war was caused by trade protectionism. The slavery issue was just camouflage, as Abraham Lincoln himself admitted. See also here

Did William Zantzinger kill poor Hattie Carroll?

Did Bismarck predict where WWI would start or was it just a "free" translation by Churchill?

Leftist psychologists have an amusingly simplistic conception of military organizations and military men. They seem to base it on occasions they have seen troops marching together on parade rather than any real knowledge of military men and the military life. They think that military men are "rigid" -- automatons who are unable to adjust to new challenges or think for themselves. What is incomprehensible to them is that being kadaver gehorsam (to use the extreme Prussian term for following orders) actually requires great flexibility -- enough flexibility to put your own ideas and wishes aside and do something very difficult. Ask any soldier if all commands are easy to obey.

A good article on Leftist hate

The real history of social Darwinism

Some personal memoirs

Memoir highlights

THE PSYCHOLOGIST

Women who give birth after IVF may be 66% more likely to suffer a STROKE a year later, major study suggests

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