Effects of prenatal group program in rural Tanzania: A quasi-experimental study.

AIM: This study conducted in rural Tanzania examined the effects of a midwife-led prenatal group program on: (1) improvement of knowledge of the physiological symptoms of pregnancy; (2) promotion of pregnancy-related empowerment; (3) enhancement of intention to self-care behaviors for safer childbirth; and (4) gaining satisfaction with antenatal care visits. METHODS: This work was a quasi-experimental study with a control group using a pre-post study design conducted in two district hospitals in Tanzania. Data were collected from 108 analyzed pregnant women from the prenatal group program (n = 54) and control program (n = 54) using questionnaires before (baseline) and after (endline) the program. The program consisted of lecture, sharing, and review sessions. The control program consisted of the same lectures. The contents of both programs included physiological symptoms of pregnancy and self-care behaviors. The primary outcome was knowledge of common symptoms of pregnancy. The secondary outcomes were Pregnancy-Related Empowerment Scale score, intention to self-care behaviors, and satisfaction. RESULTS: The primary outcome of knowledge of common symptoms of pregnancy was significantly increased in the intervention group compared with the control group (t = 2.677, p = .009). The secondary outcome of one of the Pregnancy-Related Empowerment Scale statements about midwife's respectful attitude toward women's decision was significantly increased in the intervention group compared with the control group (U = 2.076, p = .038). CONCLUSIONS: The interventional prenatal group program during pregnancy was effective in increasing knowledge of common symptoms of pregnancy and in identifying favorable midwife connectedness.

Heavy metals in slag affect inorganic N dynamics and soil bacterial community structure and function.

Heavy metal contamination of soil in the vicinity of mining sites is a serious environmental problem around the world when mining residue (slag) is dispersed as dust. We conducted an incubation experiment to investigate the effect of a slag containing high levels of Pb and Zn (62.2 and 33.6 g kg-1 slag as PbO and ZnO, respectively, sampled from a site formerly used as a lead and zinc mine) on the nitrogen cycle when mixed with soil (0-0.048 g slag g-1 soil). The nitrogen cycle provides many life supporting-functions. To assess the quality of the soil in terms of the nitrogen cycle we focused on the dynamics of nitrate and ammonium, and bacterial community structure and functions within the soil. After two weeks of pre-incubation, 15N-labeled urea (500 mg N kg-1) was added to the soil. Changes in soil pH, the concentration and 15N ratio of nitrate (NO3--N) and ammonium, and bacterial relative abundance and community structure were measured. Results indicated that increasing the ratio of slag to soil had a stronger negative effect on nitrification than ammonification, as suggested by slower nitrate accumulation rates as the slag:soil ratio increased. In the treatment with the highest amount of slag, the concentration of NO3--N was 50% of that in the controls at the end of the incubation. Regarding the bacterial community, Firmicutes had a positive and Planctomycetes a negative correlation with increasing slag concentration. Bacterial community functional analysis showed the proportion of bacterial DNA sequences related to nitrogen metabolism was depressed with increasing slag, from 0.68 to 0.65. We concluded that the slag impacted the soil bacterial community structure, and consequently influenced nitrogen dynamics. This study could form the basis of further investigation into the resistance of the nitrogen cycle to contamination in relation to soil bacterial community.