Feelings of guilt and shame in women who experience miscarriages are exacerbated by misconceptions over the causes, a US study suggests.

An online survey of 1,084 people, which formed the basis for research published in the Obstetrics & Gynecology journal on Monday, found that almost half of those who had a miscarriage felt guilty. Two in five said they felt like they had done something wrong, and the same number reported feeling alone.

A significant number of the respondents were under misapprehensions as to what caused the loss of the pregnancy. Three-quarters believed that a stressful event could bring about a miscarriage, 64% thought that lifting a heavy object could be a cause, and a fifth that previous use of oral contraceptives could induce pregnancy loss.

Coupled with the fact that 57% of those who had suffered a miscarriage said they were not given a cause for the loss, the researchers, from the Albert Einstein College of Medicine at Yeshiva University and Montefiore Medical Center, both in New York, believe such misapprehensions could contribute to the the negative feelings experienced.

Dr Zev Williams, the director of the programme for early and recurrent pregnancy loss, said: “The results of our survey indicate widespread misconceptions about the prevalence and causes of miscarriage. Because miscarriage is very common but rarely discussed, many women and couples feel very isolated and alone after suffering a miscarriage. We need to better educate people about miscarriage, which could help reduce the shame and stigma associated with it.”

The respondents, who were self-selecting, filled in a 33-question survey, which was open for three days in 2013, to assess perceptions of miscarriage, with 10 of the questions specifically directed at men or women reporting a history of miscarriage.

Of those who took part 15% said they or their partner had suffered a miscarriage, but the majority of respondents (55%) believed that miscarriages are uncommon (defined as less than 6% of all pregnancies). The truth is that miscarriages end one in four pregnancies and are by far the most common pregnancy complication, the paper says.

A fifth of people incorrectly believed that lifestyle choices during pregnancy, such as smoking or using drugs or alcohol, were the single most common cause of miscarriage, more common than genetic or medical causes. In reality, 60% of miscarriages are caused by a genetic problem.

The importance of hearing from others who have gone through the same experience was highlighted by a significant minority of those who had suffered a loss in pregnancy. Almost half said they felt less alone when friends disclosed their own miscarriage and 28% stated that celebrities’ disclosure of miscarriage had eased their feelings of isolation.

The authors concluded: “Patients who have experienced miscarriage may benefit from further counselling by healthcare providers, identification of the cause, and revelations from friends and celebrities. Healthcare providers have an important role in assessing and educating all pregnant patients about known prenatal risk factors, diminishing concerns about unsubstantiated but prevalent myths and, among those who experience a miscarriage, acknowledging and dissuading feelings of guilt and shame.”

The majority (55%) of respondents were women and all were aged 18-49. The sociodemographic distribution across gender, age, religion and geographic location and household income was consistent with 2010 national census statistics but race and ethnicity were not.