Pica during pregnancy among Mexican-born women: a formative study.

Although pica, the craving and purposive consumption of non-food substances, is common among many populations, especially during pregnancy, the health consequences are not well understood. Further, very little is known about pica among Mexican populations in the United States and Mexico. Therefore, we conducted formative research to understand pica in this understudied population. Our objectives were to identify the frequency and types of pica behaviours, to understand perceived aetiologies and consequences of pica and to ascertain if the behaviour was common enough to warrant a larger study. We held nine focus group discussions (three in the Salinas Valley, California; six in Xoxocotla, Morelos, Mexico) with 76 Mexican-born women who were currently pregnant or had delivered within the past 2 years. Earth, adobe, bean stones and ice were the most commonly reported pica substances. Twenty-eight of the 76 participants (37%) reported ever engaging in pica; 22 participants (29%) reported doing so during pregnancy. The proportion of women reporting pica in the United States and Mexico was 43% and 34%, respectively. Women attributed pica to the overwhelming organoleptic appeal of pica substances (especially smell and texture) and to micronutrient deficiencies. Perceived consequences of unfulfilled pica cravings were birthmarks or fetal loss; fulfilled pica cravings were also thought to be generally harmful to the mother or child, with several women specifying toxic lead, pesticides or 'worms'. In sum, pica among Mexican women is common enough to warrant a larger epidemiologic study of its sociodemographic correlates and physiological consequences.

Community-based Versus Traditional Research Among Older Minority Women With Urinary Incontinence.

OBJECTIVE: The aim of this study was to evaluate research retention of older minority women with urinary incontinence (UI) using a community-based participatory research (CBPR) versus a traditional research approach. METHODS: An ancillary prospective study was conducted within an ongoing pilot randomized clinical trial to treat UI. Participants were recruited using CBPR in collaboration with a local community versus a traditional research approach at an academic center. Inclusion criteria were women 65 years and older and symptomatic UI. The primary outcome was the randomization rate defined as the proportion of women randomized into the randomized clinical trial out of screened participants. Screening and consent rates were also evaluated. Pearson χ2, Fisher exact, and t tests were used. The effect of CBPR on research retention rates was expressed as odds ratio (OR) with 95% confidence intervals (CI). RESULTS: There were 10 and 88 women screened in the CBPR and traditional research groups, respectively. The CBPR participants were Hispanic (n = 10, 100%) and older (78.4 ± 8.3 years; P < 0.01). Most of the traditional research participants were non-Hispanic Black (n = 55, 62.5%) and younger (71.0 ± 4.9 years). The CBPR group had higher rates of screening (76.9% vs 40.6%; P = 0.01), consent (80% vs 44.3%; P = 0.045), and randomization (50.0% vs 14.8%; P < 0.01) compared with the traditional research group. Community-based participatory research increased the odds of research retention during screening (OR, 4.9; 95% CI, 1.3-18.2), consent (OR, 5.0; 95% CI, 1.0-25.0), and randomization (OR, 5.8; 95% CI, 1.5-22.7). CONCLUSION: Compared with traditional research, CBPR yielded higher research retention among older minority women with UI in a clinical study.

Intrahepatic Cholestasis of Pregnancy (ICP) in U.S. Latinas and Chileans: Clinical features, Ancestry Analysis, and Admixture Mapping.

In the Americas, women with Indigenous American ancestry are at increased risk of intrahepatic cholestasis of pregnancy (ICP), relative to women of other ethnicities. We hypothesized that ancestry-related genetic factors contribute to this increased risk. We collected clinical and laboratory data, and performed biochemical assays on samples from U.S. Latinas and Chilean women, with and without ICP. The study sample included 198 women with ICP (90 from California, U.S., and 108 from Chile) and 174 pregnant control women (69 from California, U.S., and 105 from Chile). SNP genotyping was performed using Affymetrix arrays. We compared overall genetic ancestry between cases and controls, and used a genome-wide admixture mapping approach to screen for ICP susceptibility loci. We identified commonalities and differences in features of ICP between the 2 countries and determined that cases had a greater proportion of Indigenous American ancestry than did controls (p = 0.034). We performed admixture mapping, taking country of origin into account, and identified one locus for which Native American ancestry was associated with increased risk of ICP at a genome-wide level of significance (P = 3.1 x 10(-5), Pcorrected = 0.035). This locus has an odds ratio of 4.48 (95% CI: 2.21-9.06) for 2 versus zero Indigenous American chromosomes. This locus lies on chromosome 2, with a 10 Mb 95% confidence interval which does not contain any previously identified hereditary 'cholestasis genes.' Our results indicate that genetic factors contribute to the risk of developing ICP in the Americas, and support the utility of clinical and genetic studies of ethnically mixed populations for increasing our understanding of ICP.