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seri gas chromatograph dilengkapi dengan injeksi split splitless modus, dan api ionisasi detektor. Injeksi dan detektor yang dipertahankan di 280 dan 300 C, masing-masing, dan sampel dianalisis oleh programing bertingkat suhu dalam kisaran 90-265 C dengan ultra tinggikemurnian kelas helium sebagai gas pembawa. Komposisi persen asam lemak dihitung dari luas puncak individu yang menggunakan sesuai standar. Prosedur inirutin divalidasi oleh kemampuan pengujian menggunakan GC/MS. Tingkat OS dihitung dengan menambahkan tingkat individu EPA, DPA, dan DHA. OI ditentukan sebagai dijelaskan sebelumnya [13]. Analisis dari semua analytes serum lainnya, termasuk TG, VLDL-C, IDL-C, LDL-C, HDL-C, apo-A, dan apo-B, hsCRP dilakukan di laboratorium diagnostik Atherotech (Birmingham, Alabama, AS), seperti dijelaskan sebelumnya [34]. Kekuatan dan sampel ukuran awal acak placebo-dikontrol studi telah menunjukkan bahwa administrasi EPA atau DHA terapi selama 6 sampai 7 minggu periode waktu dapat menyebabkan peningkatan kadar darah LC n-3 PUFA setidaknya 47% dan penurunan kadar TG darah 18-21% [35, 36]. Dengan asumsi tingkat darah OS dasar yang berarti minimal 3% dan perubahanstandard deviation of 1.5 % within a given study stratum [37], a sample size of 40 subjects per study stratum (i.e. 20 subjects assigned to 6:1-OM3 therapy, and 20 subjects assigned to placebo) would result in a minimum power of 90 % to detect an increase in blood OS levels of at least 60 % in subjects within the 6:1-OM3 study arm relative to subjects within the placebo arm, at a significance level of alpha=0.05 [37]. Assuming a mean baseline blood TG levels of at least 1.58 mmol/L and a change standard deviation of 0.40 mmol/L within a given study stratum, theproposed sample size of 40 subjects per study stratum (i.e.20 subjects assigned to 6:1-OM3 therapy, and 20 subjects assigned to placebo) would result in a minimum power of 95 % to detect a relative decrease in blood TG levels of at least 30 % in subjects within the 6:1-OM3 study arm relative to subjects within the placebo arm, at a significance level of alpha =0.05.Data analyses At the conclusion of the study, the Clinical Trial Review Committee assessed the CRF for compliance with the protocol and subjects who ingested a minimum of 80 % of the assigned capsules were locked in. The tabulated data were then un-blinded and analyses performed on the ‘‘per protocol’’ subset of study. The median change and interquartile range in blood OS and OI levels over the 8-week period, as well as all secondary outcome measures was computed for each study subject and organized by subpopulations based on treatment group, and cohorts. Percent changes from baseline to week 8 were calculated for each treatment group (placebo and 6:1-OM3) and placeboadjusted median percent changes were then calculated. A two-tailed t test (unpaired) was performed using GraphPad Prism version 6.0 for Macintosh (GraphPad Software) to illustrate placebo-adjusted changes and significance was defined as aPvalueB0.05. Safety evaluationThe qualified principal investigators at each site evaluated patient health while remained blinded to the study treatment regiment. All adverse events, defined as ‘‘treatmentemergent’’ (TEAE), which occurred during the study period, were evaluated and classified as related or unrelated to treatment by the principal investigator. Each TEAE was recorded in an individual subject’s case report form at each clinic visit, through patient health evaluations, including aquestionnaire, physical examination, clinical laboratory test evaluations, weight, and BMI. Reports were compiled, and categorized based upon grade, severity, and relationship to study treatment. The Clinical Trial Review Committee reviewed the subjects’ case report forms, and agreed with the principal investigator’s assignments.ResultsStudy description and demographic characteristics of the enrolled subjects The study protocol outline is shown in Fig.1. Of the 655 screened, 509 subjects were ineligible for study enrollment as per inclusion/exclusion criteria in the methods section. The remaining 146 subjects were stratified into two Cohorts and were randomized, blinded and treated witheither corn oil (A) or 6:1-OM3 (B). Thirty-six subjects were either lost to follow-up or the compliance with the treatment was less than 80 %. The OS data from the 655screened subjects showed LC n-3 PUFA nutritional deficiency was prevalent in general US population, with 89 % of subjects falling below 6.1 % OS (median OS 4.48 %; range 1.84–5.89 %). The baseline characteristics of the enrolled and randomized study population (Table1) were comparable within Cohorts, and across treatment groups with approximately equal numbers of males and females enrolled. The median baseline LC n-3 PUFA level (measured as OS orOI) or mean serum TG levels were comparable among two Cohorts and treatment groups. The mean BMI was[30 (obese) for all groups and Cohorts. Statin use was also
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