Researchers enroll 100 cases of lung cancer in a study, and 35% are White and 52% are male. Controls are selected so that 35% of the control group participants are White and 50% of control group participants are male. This is an example of: Researchers enroll 100 cases of lung cancer in a study, and 35% are White and 52% are male. Controls are selected so that 35% of the control group participants are White and 50% of control group participants are male. This is an example of: Individual matching Randomization Group frequency matching

Researchers enroll 100 cases of lung cancer in a study, and 35% are White and 52% are male. Controls are selected so that 35% of the control group participants are White and 50% of control group participants are male. This is an example of: Researchers enroll 100 cases of lung cancer in a study, and 35% are White and 52% are male. Controls are selected so that 35% of the control group participants are White and 50% of control group participants are male. This is an example of: Individual matching Randomization Group frequency matching

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heritability was published in 2009 in the International Journal of Obesity. This study uses data from the "FinnTwin16" study in which nearly all twins born in Finland from 1975-79 are being tracked for many phenotypes. The table below reports correlation coefficients (rmz and dmz) separately for male and female twin pairs at about 30 years of age for 3 traits: BMI, waist circumference, and level of physical activity (the study investigated the relationships between these traits). Calculate H² for each trait and sex using the strategy discussed in Video 4.4. Match the your values with the appropriate trait and sex. Number of pairs BMI Waist circumference Physical activity Female BMI 0.77 0.71 0.55 Female physical activity Male BMI Female waist circumference Male physical activity Male waist circumference Female MZ 414 0.79 0.54 0.55 [[|]] Male MZ 282 0.36 0.35 0.24 Female DZ 353 0.31 0.26 0.30 Male DZ 309
Continuing with the side-blotched lizard study... What would be an appropriate control group to use in this study? Question 3 options: female lizards that are kept at different temperatures female lizards that are exposed to another female instead of a male yellow-throated male lizards male lizards with multicolored throats blue-throated male lizards
Please help with the following: Lactase persistence is an adaptation to milk drinking that has developed since the beginning of agriculture ~10 KYA. What is the relationship between the alleles driving this ability in European, Indian and African populations? A. One allele is responsible for lactase persistence in Europeans and Indians because of where agriculture originated and was introduced through migration. routes. B. The allele responsible for lactase persistence in all three populations is the same allele on the LCT gene. C. Different alleles are responsible for lactase persistence in each population. D. One allele is responsible for lactase persistence in Europeans, but other alleles cause the trait in Indian and African populations. E. One allele is responsible for lactase persistence in Africans, but other alleles cause the trait in European and Indian populations.
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Chart 2. Levels of evidence (ASHA, 2004) Level Description la Well-designed meta-analysis of more than one randomized controlled trial lb lla llb III IV Well-designed randomized controlled study Well-designed controlled study without randomization Well-designed quasi-experimental study Well-designed non-experimental studies, i.e., correlational and case studies Expert committee report, consensus conference, clinical experience of respected authorities Match the types of study with their ranking level. Randomized control trial Cohort study Cross-sectional study Case-control study Single subject design (time series) Single case study [Choose ] Level 3 ✓ Level 2 Level 1 Level 2 Level 3 [Choose] [Choose ] [Choose ]
Colony collapse disorder (CCD) is unexplained loss of entire bee colonies that has been occurring in increased numbers across the world. The cause of the disorder is unknown, although it has been suggested that pesticides may play a role. To study this phenomenon, 300 bee colonies at 20 different sites across the U.S. are analyzed. Colonies are classified as having no CCD symptoms (group 1) or as having CCD symptoms (group 2). Bee pollen is isolated from group 1 and group 2 colonies and analyzed for the presence of pesticides. Significantly higher average pesticide levels being found in group 2 colonies, the conclusion of the study states that increasing pesticides use may be leading to the death of bees and a loss of bee colonies in CCD. Does this study have a control group? If so, what is the control group? If not, why not?