Sentences with phrase «number of comparison samples»

The study did not make clear, however, whether this was due to an insufficient number of comparison samples or whether K1f was indeed extinct.

Not exact matches

In addition, the researchers looked at brain samples of deceased patients with MS and found increased numbers of GM - CSF - producing cells in comparison to normal brain samples.

Also, the number of samples available for a «background» comparison is usually small.

For papers identifying locally adapted loci from SNP data in wild populations, the proportion of SNPs tested that were local adaptation candidates based on either (a) FST outlier status or (b) significant genotype - environment associations, in comparison to the log - scaled number of individuals sampled in the reported dataset.

De Jager told Alzforum that preliminary data from comparisons between a small number of post-mortem AD brain samples and normal aging brains revealed no striking differences in mCH.

Given the small sample sizes per nation in international assessments, it's unlikely that a valid comparison could be drawn between the limited number of Grade 8 students assessed per nation in PISA and the nationally representative samples of U.S. Grade 8 students assessed in NAEP and TIMSS.

Critics of international comparisons, including many practitioners and a number of researchers, argue that it is impossible to accurately compare US students» performance against that of their international peers because the students selected by their respective countries vary widely in their demographic makeup (not all countries include language learners and students with disabilities in their samples) and the sample size of students from various socioeconomic groups can vary widely.

In the non-endemic area of Fermo (Ascoli Piceno province), concentration test results were similar and microfilaraemia due to D. immitis (1 to 8 per sample) was present in the total number of dogs with clinical manifestations (Fig. 1,2,4), without significant quantitative differences in comparison with the results coming from the endemic area.

For a fairer comparison, both graphs have been smoothed - and - sampled at rates designed to make both graphs deliver the same number of samples, namely 120 total.

Given the primary objectives of the trial and measures collected in existing RCTs, 18, 49 we chose to anchor our sample size calculation around detection of a minimum effect size of 0.3 for the responsivity subscale of the Home Observation Measurement of the Environment (HOME) Inventory (see table 2), to allow comparisons with the original MECSH trial and other international SNHV programmes.60 The sample size applies across all of the subscales of the HOME Inventory and other continuous outcomes as based on number of SDs rather than the actual outcome distributions.

We had a relatively small sample for the number of comparisons we made, which increases the likelihood of finding a false significant result [41].

We entered the number of patients and control group members, mean age, percentage of girls and of members of ethnic minorities, the country of data collection, year of publication, type of illness, duration of illness, the sampling procedure (1 = probability samples, 0 = convenience samples), the use of a control group (0 = yes, 1 = comparison with test norms), equivalence of patients and control group (1 = yes, 2 = not tested, 3 = no), the rater of depressive symptoms (1 = child, 2 = parent, 3 = teacher, 4 = clinician), the measurement of the variables, and the standardized size of between - group differences in depressive symptoms.

Limitations include differences in the number of therapy sessions across groups and small sample sizes, particularly for the comparison groups.

Limitations include the small sample size, the lack of a comparison group, and a comparatively small number of male adolescents who participated in the treatment.

Furthermore, not enough data was available to include the comparison of secure vs. insecure attachment representations, because of the low number of securely attached patients in the current sample.