Dietary Knowledge and Myths Vary by Age and Years of Schooling in Pregnant Mexico City Residents
Abstract
:1. Introduction
2. Material and Methods
2.1. Study Design and Subjects
2.2. Data Gathering Methods
2.3. Anthropometric Evaluation
2.4. Ethical Aspects
2.5. Statistical Analysis
3. Results
3.1. Implementing Myths or not Acting on Knowledge
3.2. Probability of Acting on Myths and not Practicing Knowledge
4. Discussion
4.1. Myths about Nutrition and Diet during Pregnancy
4.2. Myths about Nutrition and Diet during Breastfeeding
4.3. Knowledge
4.4. Incongruence between Beliefs, Knowledge, and Practice
4.5. Myths and Newborn Weight
4.6. Implications
4.7. Strengths and Limitations
5. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
Declarations: Ethics approval
Abbreviations
CI | Confidence Interval |
BMI | Body Mass Index |
OR | Odds Ratio |
References
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Myths | Knowledge | ||||
---|---|---|---|---|---|
Score | n | % | Score | n | % |
0 | 5 | 0.5 | 3 | 1 | 0.1 |
1 | 37 | 3.6 | 4 | 3 | 0.3 |
2 | 71 | 7.0 | 5 | 16 | 1.6 |
3 | 134 | 13.2 | 6 | 60 | 5.9 |
4 | 222 | 21.8 | 7 | 172 | 16.9 |
5 | 241 | 23.7 | 8 | 305 | 30.0 |
6 | 217 | 21.3 | 9 | 296 | 29.1 |
7 | 90 | 8.8 | 10 | 164 | 16.1 |
Total | 1017 | 100 | Total | 1017 | 100 |
Myths | Knowledge | |||||
---|---|---|---|---|---|---|
Characteristics | Below Median * n = 469 | Above Median * n = 548 | p-Value | Below Median * n = 80 | Above Median * n = 937 | p-Value |
Mother a Mean (standard deviation) | ||||||
Age (yrs.) | 23 (7) | 27 (8) | 0.001 | 27 (9) | 25 (8) | 0.116 |
Pregestational weight (kg) | 57 (12) | 61 (13) | 0.001 | 59 (12) | 59 (13) | 0.979 |
BMI pregestational | 23 (5) | 25 (4) | 0.001 | 24 (4) | 24 (4) | 0.725 |
GWG (kg) | 12 (6) | 11 (7) | 0.238 | 11 (7) | 11 (6) | 0.647 |
Pregnancies (#) | 2 (1.0) | 1 (1.3) | 0.001 | 1.7 (1.0) | 1.8 (1.2) | 0.502 |
Newborn a Mean (standard deviation) | ||||||
Gestational age (weeks) | 38 (2) | 38 (2) | 0.192 | 38 (2) | 38 (2) | 0.161 |
Length (cm) | 48 (3) | 48 (3) | 0.085 | 48 (4) | 48 (3) | 0.097 |
Weight (g) | 2839 (600) | 2963 (552) | 0.001 | 2835 (580) | 2913 (580) | 0.261 |
Sociodemographic data b Frequency (%) | ||||||
Education (yrs.) | 9 (9–12) | 12 (9–14) | 0.001 | 12 (9–12) | 12 (9–12) | 0.594 |
Socio-economic (level) | 2 (1–2) | 2 (2–2) | 0.001 | 2 (1–2) | 2 (1–2) | 0.434 |
Educational lag | ||||||
Yes | 345 (74) | 336 (61) | 0.001 | 52 (65) | 630 (67) | 0.384 |
No | 124 (26) | 212 (39) | 28 (35) | 307 (33) | ||
Place of work Homemaker | 388 (83) | 422 (77) | 0.012 | 65 (82) | 743 (80) | 0.333 |
Outside the home | 80 (17) | 127 (23) | 14 (18) | 192 (20) | ||
Socioeconomic level | ||||||
Middle | 52 (11) | 133 (24) | 0.001 | 14 (17) | 171 (18) | 0.867 |
Low | 417 (89) | 415 (76) | 66 (83) | 766 (82) |
Age (yrs.) | Education (yrs.) | Socio-Economic Level | Number of Pregnancies | Baby Weight (g) | BMI p | GWG (kg) | ||
---|---|---|---|---|---|---|---|---|
Pregnancy | ||||||||
You must eat for two during pregnancy | Correct (n = 719, 71%) | 26.7 (8) a | 11.7 (2.6) a | 2.1 (0.8) a | 1.93 (1.2) a | 2937 (587) b | 25 (5) a | 11.0 (7.1) |
Incorrect (n = 298, 29%) | 22.8 (8) | 9.8 (2.1) | 1.7 (0.6) | 1.63 (1.1) | 2831 (556) | 22 (3) | 11.6 (7.4) | |
Not satisfying cravings leave a mark on the infant’s body | Correct (n = 811, 80%) | 23 (7.7) a | 11.4 (2.6) a | 2.0 (0.8) a | 1.9 (1.2) b | 2927 (563) a | 24 (5) b | 11.2 (7.3) |
Incorrect (n = 206, 20%) | 26.2 (8.2) | 10 (2.2) | 1.7 (0.72) | 1.6 (1.1) | 2827 (637) | 23 (5) | 11.2 (6.7) | |
Vomiting cannot be controlled during pregnancy | Correct (n = 399, 39%) | 27 (8.1) a | 11.6 (2.6) a | 1.9 (0.78) | 1.93 (1.2) b | 2942 (565) | 25 (5) b | 11.3 (7-6) |
Incorrect (n = 618, 61%) | 24.6 (8.1) | 10.8 (2.5) | 2.0 (0.86) | 1.78 (1.1) | 2883 (589) | 24 (5) | 11.1 (6.9)) | |
You cannot exercise during pregnancy | Correct (n = 825, 81%) | 25.8 (8.2) b | 11.3 (2.6) a | 2.0 (0.85) a | 1.85 (1.2) | 2925 (577) a | 24 (5) | 11.09 (7.1) |
Incorrect (n = 192, 19%) | 24.2 (8.0) | 10.2 (2.3) | 1.72 (0.58) | 1.82 (1.1) | 2825 (589) | 24 (5) | 11.8 (7.8) | |
It is impossible to recover one’s pre-baby weight after childbirth | Correct (n = 818, 80%) | 25.6 (8.2) | 11.3 (2.6) a | 1.96 (0.48) b | 1.8 (1.1) | 2926 (574)b | 24 (5) | 10.9 (7.1) b |
Incorrect (n = 199, 20%) | 25.1 (8.1) | 10.5 (2.4) | 1.89 (0.69) | 1.9 (1.2) | 2823 (598) | 24 (5) | 12.3 (7.4) | |
Breastfeeding | ||||||||
Drinking “atole” or beer enhances breast milk production | Correct (n = 674, 66%) | 26.6 (8.3) a | 11.4 (2.6) a | 2.0 (0.8) a | 1.9 (1.2) a | 2915 (575) | 24 (5) b | 10.9 (7.5) |
Incorrect (n = 343, 34%) | 23.5 (7.4) | 10.7 (2.4) | 1.8 (0.7) | 1.6 (1.0) | 2889 (590) | 25 (5) | 11.8 (6.5) | |
A frightened or angry mother should not nurse her baby | Correct (n = 360, 36%) | 26.8 (8.1) a | 11.7 (2.8) a | 2.07 (1.3) a | 2.03 (1.3) a | 2917 (584) | 24 (5) | 11.5 (7.7) |
Incorrect (n = 657, 64%) | 24.9 (8.1) | 10.8 (2.7) | 1.88 (0.7) | 1.74 (1.1) | 2901 (578) | 24 (5) | 11.0 (6.9) |
Mean | Β | Standard Error | 95% CI | p-Value | |
---|---|---|---|---|---|
Myths * | |||||
Score | 4 | ||||
Age | 0.025 | 0.007 | 0.011, 0.040 | <0.001 | |
Number of pregnancies | 0.069 | 0.043 | −0.015,0.153 | 0.117 | |
Socioeconomic level | 0.060 | 0.066 | −0.070, 0.189 | 0.365 | |
Years of schooling | 0.174 | 0.020 | 0.136, 0.213 | <0.001 | |
Knowledge § | |||||
Score | 8 | ||||
Age | −0.017 | 0.006 | −0.028, −0.005 | 0.005 | |
Number of pregnancies | 0.077 | 0.036 | 0.002, 0.148 | 0.033 | |
Socioeconomic level | 0.056 | 0.056 | −0.052, 0.164 | 0.310 | |
Years of schooling | −0.002 | 0.017 | −0.029, 0.031 | 0.927 |
Answer | Correct | Incorrect | p-Value |
---|---|---|---|
Practice a Myth | |||
• Pregnancy | |||
You must eat for two during pregnancy (n = 263) | 113 (43) | 150 (57) | 0.001 |
Not satisfying cravings leave a mark on the infant’s body (n = 541) | 429 (79) | 112 (21) | 0.395 |
Vomiting cannot be controlled during pregnancy (n = 30) | 11 (37) | 19 (63) | 0.973 |
You cannot exercise during pregnancy (n = 635) | 494 (78) | 141 (22) | 0.001 |
• Breastfeeding | |||
Drinking atole or beer enhances breast milk production (n = 144) | 70 (49) | 74 (51) | 0.001 |
A frightened or angry mother should not nurse her baby(n = 107) | 34 (32) | 73 (68) | 0.407 |
Not practice knowledge | |||
• Pregnancy | |||
Caffeine consumption provokes premature birth (n = 353) | 302 (86) | 51 (14) | 0.002 |
Folic acid intake should begin before—not only during—pregnancy (n = 767) | 469 (61) | 298 (39) | 0.005 |
A healthy diet and lifestyle during pregnancy prevents future diseases in a child (n = 636) | 598 (94)) | 38 (6) | 0.232 |
• Breastfeeding | |||
A mother should consume about 3 liters of water per day while nursing (n = 688) | 432 (63) | 256 (37) | 0.734 |
Mothers require adequate increased energy intake during pregnancy and nursing(n = 1003) | 640 (64) | 363 (36) | 0.286 |
During the first six months of life, breast milk is the only food a baby requires (n = 930) | 868 (93) | 62 (7) | 0.373 |
OR | 95% CI | p-Value | |
---|---|---|---|
Myths | |||
You must eat for two during pregnancy | |||
• Being an adolescent | 1.76 | 1.26–2.44 | 0.001 |
• Being married | 1.47 | 1.11–1.95 | 0.007 |
Not satisfying cravings leave a mark on the infant’s body | |||
• Being an adolescent | 2.41 | 1.78–3.26 | 0.001 |
You cannot exercise during pregnancy | |||
• Being an adolescent | 1.59 | 1.16–2.18 | 0.003 |
• Low socioeconomic level | 1.41 | 1.01–1.95 | 0.038 |
Drinking atole or beer enhances breast milk production | |||
• Being single | 2.07 | 1.38–3.09 | 0.001 |
A frightened or angry mother should not nurse her baby | |||
• Being an adult | 2.61 | 1.35–5.04 | 0.004 |
Knowledge | |||
Caffeine consumption provokes premature birth | |||
• Being an adolescent | 1.42 | 1.05–1.91 | 0.022 |
• High school or below | 1.38 | 1.04–1.84 | 0.025 |
Folic acid intake should begin before—not only during—pregnancy | |||
• High school or below | 1.53 | 1.14–2.05 | 0.004 |
A healthy diet and lifestyle during pregnancy prevents future diseases in a child | |||
• Being a homemaker | 1.26 | 0.92–1.73 | 0.138 |
A mother should consume about 3 liters of water per day while nursing | |||
• Being an adolescent | 1.86 | 1.22–2.82 | 0.003 |
• High school or below | 1.38 | 1.00–1.91 | 0.046 |
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Sámano, R.; Lara-Cervantes, C.; Martínez-Rojano, H.; Chico-Barba, G.; Sánchez-Jiménez, B.; Lokier, O.; Hernández-Trejo, M.; Grosso, J.M.; Heller, S. Dietary Knowledge and Myths Vary by Age and Years of Schooling in Pregnant Mexico City Residents. Nutrients 2020, 12, 362. https://doi.org/10.3390/nu12020362
Sámano R, Lara-Cervantes C, Martínez-Rojano H, Chico-Barba G, Sánchez-Jiménez B, Lokier O, Hernández-Trejo M, Grosso JM, Heller S. Dietary Knowledge and Myths Vary by Age and Years of Schooling in Pregnant Mexico City Residents. Nutrients. 2020; 12(2):362. https://doi.org/10.3390/nu12020362
Chicago/Turabian StyleSámano, Reyna, Citlali Lara-Cervantes, Hugo Martínez-Rojano, Gabriela Chico-Barba, Bernarda Sánchez-Jiménez, Orly Lokier, María Hernández-Trejo, Juan Manuel Grosso, and Solange Heller. 2020. "Dietary Knowledge and Myths Vary by Age and Years of Schooling in Pregnant Mexico City Residents" Nutrients 12, no. 2: 362. https://doi.org/10.3390/nu12020362
APA StyleSámano, R., Lara-Cervantes, C., Martínez-Rojano, H., Chico-Barba, G., Sánchez-Jiménez, B., Lokier, O., Hernández-Trejo, M., Grosso, J. M., & Heller, S. (2020). Dietary Knowledge and Myths Vary by Age and Years of Schooling in Pregnant Mexico City Residents. Nutrients, 12(2), 362. https://doi.org/10.3390/nu12020362