Functional constipation stands as a prevalent concern within the general population, assuming particular significance during pregnancy and the postpartum period (1). Constipation is commonly reported during pregnancy, ranking as the second most frequent complaint among pregnant women (2). This condition represents a frequent clinical syndrome with prevalence rates ranging from 2.6 to 24.8% in Asia and affecting up to 40% of pregnant women (2, 3). The impact of constipation extends beyond discomfort, reducing quality of life and increasing the burden on healthcare systems. Chronic constipation can lead to straining, which may injure the pudendal nerve, weaken the pelvic floor, or impair the supportive functions of the pelvic structures (4). Furthermore, if left untreated, chronic constipation can result in serious complications such as fecal impaction, incontinence, bowel damage, bleeding, hemorrhoids, and anal fissures (5). The hormone progesterone assumes a pivotal role during pregnancy, not only in relaxing smooth muscles in venous walls but also in the intestines, resulting in diminished motility and an increased risk of constipation (6). This risk escalates notably in late pregnancy due to decreased intestinal movement, substantial hormonal fluctuations, and delayed bowel emptying (7). Moreover, pregnant women exhibit heightened susceptibility to the effects of iron supplements and other prenatal vitamins, which can exacerbate constipation symptoms (8, 9). Despite being a common occurrence in pregnant women, constipation can adversely impact their quality of life and overall health. The discomfort associated with constipation can give rise to various related issues, including hemorrhoids, anal fissures, and rectal prolapse, thereby adversely affecting pregnant women’s quality of life, sleep, emotional well-being, and daily activities (10, 11). Addressing these concerns through targeted interventions is imperative for enhancing the well-being and health outcomes of pregnant women.

The Knowledge-Attitude-Practice (KAP) theory assumes a pivotal role in shaping human health behaviors (12). It is commonly employed alongside the KAP questionnaire to thoroughly gauge the knowledge, attitudes, and behaviors of the specific population within the healthcare sphere. Furthermore, it aids in evaluating the receptiveness and extent of acceptance of relevant information (13). This model, integral to health literacy, is underpinned by the fundamental premise that knowledge exerts a positive influence on attitudes, and these attitudes, in turn, shape individual practices (14). Given that constipation can induce discomfort in pregnant women, antenatal care during pregnancy assumes paramount importance for maternal and child health. Understanding and managing constipation issues during pregnancy are crucial for delivering high-quality prenatal care. Additionally, comprehending pregnant women’s attitudes and practices can help unveil potential issues and challenges, thereby contributing to the development of more effective intervention measures aimed at enhancing the quality of life and overall health of pregnant women. It is worth noting that there is currently a paucity of KAP studies in this area.

Shanghai, as the largest and most developed city in China, boasts a population of approximately 24 million people (15). Residents of this city tend to have relatively higher health awareness, which facilitates the dissemination and adoption of health-related information and practices. This heightened awareness among Shanghai’s populace can be instrumental in effectively promoting health education and interventions. Hence, this study aimed to investigate the KAP concerning constipation during pregnancy among pregnant women in Shanghai. The findings of this study may provide valuable insights for improving the management of constipation in pregnant women, potentially leading to better health outcomes and enhanced quality of life for this population.

In this study, a total of 517 questionnaires were collected, with 241 (46.6%) participants falling within the age bracket of 30–34 years, 311 (60.2%) attaining education up to the level of a Bachelor’s degree or college, and 349 (67.5%) being employed in white-collar or company positions. Furthermore, 349 (67.5%) were nulliparas, and the majority experienced singleton pregnancies (97.3%). A total of 358 (69.2%) reported experiencing constipation during pregnancy, while 236 (45.6%) reported constipation before pregnancy, with 116 (49.2%) indicating a duration of less than 1 year. A significant proportion, 380 (73.5%), had not received education and guidance about constipation during pregnancy. The median (25th percentile, 75th percentile) scores for knowledge (possible range: 0–26), attitude (possible range: 7–35), and practice (possible range: 14–70) were 22 (18, 24), 26 (23, 29), and 51 (46, 56), respectively. The knowledge score exhibited variation among pregnant women based on different occupation types (p = 0.005) and whether they had received education and guidance related to constipation during pregnancy (p < 0.001). Regarding attitude scores, differences were noted among pregnant women with varying gestational weeks (p = 0.021), singleton/twin pregnancies (p = 0.041), those who experienced constipation during pregnancy (p < 0.001), and those who experienced constipation before pregnancy (p = 0.004). Practice scores differed among pregnant women based on age (p < 0.001), education (p = 0.031), occupation type (p = 0.015), whether they experienced constipation during pregnancy (p = 0.027), whether they experienced constipation before pregnancy (p < 0.001), and whether they received education and guidance related to constipation during pregnancy (p = 0.016) (Table 1).

In the knowledge dimension, 79.3% of pregnant women exhibit an awareness of constipation during pregnancy (K1). Regarding potential symptoms of constipation in pregnancy, awareness exceeds 70% for all of them (K2). In terms of factors that may contribute to constipation during pregnancy, awareness surpasses 85% for all, except for the association with smoking and drinking (K3f), which only 54.0% are cognizant of. Notably, only 48.5% are aware that constipation during pregnancy may lead to difficult childbirth (K4d). In the realm of measures for preventing and treating constipation during pregnancy, the least-known is the consumption of legumes (red beans, green beans, etc.) (K5d, only 55.7%). Surprisingly, 90.7% recognize that establishing a habit of regular bowel movements can prevent constipation (K6) (Supplementary Table S1).

Regarding attitudes toward constipation during pregnancy, 42.7% of respondents perceive it as very common (A1). The terms “very common” and “less common” reflect the personal perspectives of the respondents based on their understanding and experience. These terms were used to capture the subjective views of participants. Furthermore, a notable portion of participants express various concerns related to this issue. Specifically, 35.6% are apprehensive about experiencing constipation during pregnancy (A2), while 40.4% indicate that they would feel distressed and troubled if they were to encounter it (A4). Additionally, 27.1% express concerns about how constipation might impact the late-term health of the fetus (A5). Moreover, 28.0% are uncertain about whether they are concerned about the potential risk of miscarriage or premature birth in relation to constipation during pregnancy (A4). 46.2% of respondents emphasize the importance of preventive measures, believing they can have some effect in averting constipation during pregnancy (A6). 60.3% of participants favor the use of lactulose to address constipation during pregnancy (A7). Furthermore, 59.4% variably agree that regulating their emotions can have a positive impact on alleviating constipation in pregnancy (A8) (Supplementary Table S2).

The practices of pregnant women exhibited variability. 30.9% predominantly adopted a sedentary lifestyle or rested in bed during pregnancy, whereas 30.6% engaged in appropriate daily exercise (P1). Furthermore, 31.9% occasionally stayed up late (P2), 38.9% occasionally consumed spicy and stimulating foods (P3), and sweets (P4). Additionally, 41.6% reported having three regular meals (P11), 47.0% included staple food in every meal (P6), and 72.1% regularly consumed green vegetables (P7). Among those with a preference for meat, red meat was the most popular (P10.1, 75.3%). Among those with a preference for vegetarian food, green leafy vegetables were the most popular (P10.2, 88.1%). Additionally, 57.1% paid regular attention to their bowel situation (P12). When experiencing constipation during pregnancy, 42.9% chose to consult a hospital for treatment, followed by 34.4% consulting a pharmacy for treatment (P15). 74.3% stated that they usually or always take the initiative to regulate their emotions (P16) (Supplementary Table S3).

Correlation analysis revealed that knowledge was positively correlated with attitude (r = 0.150, p < 0.001) and practice (r = 0.039, p = 0.381). Conversely, attitude exhibited a negative correlation with practice (r = −0.049, p = 0.268) (Supplementary Table S4).

In the multivariate analysis, variables with p-values less than 0.1 from the univariate analysis were incorporated. The results revealed that being medical personnel (OR = 2.222, 95% CI: [1.026–4.815], p = 0.043) and receiving education and guidance related to constipation during pregnancy (OR = 0.432, 95% CI: [0.285–0.654], p < 0.001) were significantly associated with knowledge (Table 2). Meanwhile, being aged 30–34 years old (OR = 1.571, 95% CI: [1.021–2.418], p = 0.040) was significantly associated with a positive attitude. Conversely, being in the gestational period of 29–36 weeks (OR = 0.602, 95% CI: [0.370–0.979], p = 0.041), having a gestational period greater than or equal to 37 weeks (OR = 0.451, 95% CI: [0.278–0.734], p = 0.001), and not experiencing constipation during pregnancy (OR = 0.553, 95% CI: [0.366–0.837], p = 0.005) were significantly associated with a negative attitude (Table 3). Furthermore, being aged 30–34 years old (OR = 2.745, 95% CI: [1.741–4.327], p < 0.001), being aged 35 years old and above (OR = 2.514, 95% CI: [1.511–4.182], p < 0.001), being in an educational profession (OR = 2.310, 95% CI: [1.204–4.433], p = 0.012), and not experiencing constipation before pregnancy (OR = 1.894, 95% CI: [1.285–2.792], p = 0.001) were significantly associated with proactive practice (Table 4).

Pregnant women exhibited a satisfactory level of knowledge, positive attitudes, and proactive practices toward constipation during pregnancy. To improve clinical practice, it is recommended to target educational efforts toward those lacking prior knowledge, customize interventions for specific age groups, and promote preventive practices among those without a history of constipation before pregnancy.

The pregnant women in this study demonstrated a generally commendable level of knowledge, positive attitudes, and proactive practices concerning constipation during pregnancy, as reflected by median scores within acceptable ranges. The observed variations in knowledge, attitudes, and practices based on demographic factors and prior education are noteworthy. Firstly, it is encouraging to observe that being a medical professional and receiving education on constipation during pregnancy were independently associated with higher knowledge scores. This suggests that healthcare providers can play a crucial role in disseminating accurate information to pregnant women, potentially by integrating essential education into routine antenatal care (22, 23). Nevertheless, despite this generally positive trend, certain groups displayed a less favorable attitude, notably pregnant women in later stages of pregnancy and those who have experienced constipation during pregnancy or before. These findings underline the importance of early interventions and education to foster more positive attitudes, potentially reducing the discomfort and complications associated with constipation in the later stages of pregnancy (24, 25). It is evident that tailored educational programs and support mechanisms for these specific groups can contribute to enhanced clinical outcomes. Furthermore, the factors independently associated with proactive practices, such as age, occupation, and pre-pregnancy constipation history, suggest that specific subpopulations may be more inclined to adopt recommended practices. This insight can guide clinicians in identifying those at greater risk and offer personalized guidance to improve proactive practices among pregnant women, ultimately leading to better management of constipation during pregnancy (26).

The findings within the knowledge dimension of this investigation reveal a generally positive comprehension among gravid females concerning constipation during gestation. It is imperative, however, to concentrate on rectifying specific deficiencies and proffering initiatives to augment clinical proficiency in the management of this physiological state. Notably, the preponderance of participants adeptly identified the symptoms and ramifications of constipation during pregnancy, indicating a robust foundational knowledge. Nevertheless, a smaller subset accurately recognized the measures for averting or ameliorating constipation, with certain participants expressing ambiguity regarding recommended practices. This incongruity accentuates an arena where clinical efficacy can be ameliorated. To bridge this lacuna, healthcare providers should accord precedence to patient education and counseling concerning preventative measures, such as dietary recommendations, hydration, and regular bowel habits (27). Furthermore, exertions to augment knowledge and awareness should be continual and bespoke to rectify particular misconceptions or uncertainties uncovered in this inquiry, guaranteeing that all gravid females receive comprehensive guidance and support for the management of constipation during gestation (28–30). A targeted educational approach, particularly centered on preventive strategies, has the potential to yield superior clinical outcomes, heightened patient contentment, and overall well-being during pregnancy (31, 32).

The findings derived from the attitude dimension of this investigation yield valuable insights into the perceptions and concerns of gravid females regarding constipation during gestation, illuminating avenues for refining clinical practice. Evidently, a substantial proportion of participants acknowledge constipation during pregnancy as a common occurrence; however, there exists a spectrum of sentiments encompassing worry, distress, and annoyance associated with this physiological state. Some articulate apprehensions regarding potential repercussions on pregnancy and fetal health, underscoring the necessity for proactive management. Notably, the majority of participants appreciate the significance of preventive measures through dietary and lifestyle modifications in addressing constipation during pregnancy. Nevertheless, there exists room for enhancement in elevating awareness about specific intervention options such as lactulose, probiotics, and laxatives, alongside mood regulation to alleviate constipation symptoms. In consideration of these outcomes, refining clinical practice involves the provision of personalized counseling and support to assuage concerns and anxieties, particularly for those experiencing heightened distress (33, 34). Furthermore, an opportunity arises to enlighten gravid females on diverse management options, underscoring the efficacy of dietary and lifestyle adjustments, and enhancing awareness about specific interventions when warranted (28, 35). An integrated approach that addresses the psychological and physiological dimensions of constipation during gestation can contribute to superior clinical outcomes and patient well-being.

The practice dimension of this investigation unveils pivotal insights into the behaviors and habits exhibited by gravid females in Shanghai with regard to constipation during gestation. It is apparent that various lifestyle factors, such as frequent sitting or lying down, late-night wakefulness, and dietary preferences, are prevalent among the participants, potentially conferring to constipation issues. Furthermore, the findings disclose that certain pregnant women adopt unhealthy eating practices, including the consumption of spicy or sweet foods and substituting water with less hydrating beverages. Additionally, there exists a deficiency in the emphasis on regular exercise and the inclusion of green vegetables in the diet. Of particular note, a considerable number of participants neglect monitoring their bowel movements, surpassing the recommended duration for such activities, and exhibit a tendency to postpone bowel movements upon feeling the urge. Rectifying these shortcomings in clinical practice necessitates the provision of comprehensive education and counseling regarding the significance of regular exercise, maintenance of a balanced diet with a focus on high-fiber foods and adequate hydration, and the cultivation of healthy bowel habits (36, 37). Initiatives targeted at heightening awareness and effecting behavioral changes in these domains can substantially contribute to the prevention and management of constipation during gestation, ultimately augmenting the overall well-being of expectant mothers.

Given the observed gaps in KAP concerning constipation during pregnancy as indicated in the study, it becomes imperative to implement tailored educational initiatives that address specific needs. Tailored education should encompass detailed discussions, visual aids on symptoms and potential outcomes, and integrated information sessions during routine antenatal care. These could include live demonstrations on dietary modifications, physical activity suitable for pregnancy, and stress management techniques such as prenatal yoga. Furthermore, personalized counseling and support groups can offer individual guidance and community learning opportunities. Regular assessments during prenatal visits would also enable healthcare providers to continuously adapt educational content, ensuring it meets the dynamic needs of pregnant women.

The correlation analysis carried out in this study has unveiled associations between knowledge, attitude, and practice regarding constipation during pregnancy. These findings underscore the interplay among these factors, wherein knowledge exhibits a positive correlation with attitude, and attitude, in turn, demonstrates a negative correlation with practice. These results intimate that while augmenting knowledge can cultivate more positive attitudes, there exists a divergence between attitudes and tangible practices. For the enhancement of clinical practice, interventions should concentrate on addressing this disparity and equipping gravid females with the requisite tools and motivation to translate their positive attitudes into proactive behaviors (38, 39).

Several limitations merit consideration when interpreting the results of this study. Firstly, the study employed a self-administered questionnaire, which may be susceptible to response bias and self-reporting inaccuracies due to an inadequate provision for precise quantification. Secondly, the cross-sectional design of the study restricts our capacity to establish causal relationships between variables. Thirdly, the study was conducted at the Obstetrics and Gynaecology Hospital of Fudan University in Shanghai, where the majority of individuals possess a high level of education and income. The dietary structure reflects certain characteristics of metropolitan areas, and the findings may not be readily generalizable to other regions or populations. Additionally, the study did not delve into other potential factors influencing knowledge, attitudes, and practices, such as cultural or socioeconomic factors.

Pregnant women demonstrated sufficient knowledge, a positive attitude, and proactive practices toward constipation during pregnancy. In light of our findings, we propose that healthcare providers in Shanghai deliver tailored education and guidance on pregnancy-related constipation, especially targeting those without a medical background. Furthermore, there should be an emphasis on fostering positive attitudes and proactive practices, particularly in pregnant women aged 30–34 and those aged 35 years and above. Lastly, there is a need to promote preventive practices among women with no prior history of constipation before pregnancy.

The original contributions presented in the study are included in the article/Supplementary material, further inquiries can be directed to the corresponding author.

The studies involving humans were approved by the Medical Ethics Committee of Obstetrics and Gynecology Hospital of Fudan University (2023-91). The studies were conducted in accordance with the local legislation and institutional requirements. Written informed consent for participation was not required from the participants or the participants’ legal guardians/next of kin in accordance with the national legislation and institutional requirements.

LL: Formal analysis, Writing – original draft. YY: Investigation, Writing – original draft. WG: Writing – review and editing. RH: Writing – review and editing. HZ: Investigation, Formal analysis, Writing – review and editing.