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Ý nghia của odds ratio và relative risk

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Lâm sàng thống kêÝ nghĩa của odds ratio và relative risk Nguyễn Văn Tuấn Hỏi: “Nhiều bài báo nghiên cứu y học lúc thì báo cáo odds ratio, lúc thì relativerisk. Em xin hỏi thầy hai chỉ số này khác nhau như thế nào và chỉ số nào đúng. Em thấyhình như không có sách nào ở Việt Nam giải thích rõ về hai chỉ số này.” Đây là một thắc mắc không chỉ ở nước ta mà … toàn thế giới.

Lecture Systematic Reviews: Methods and Procedures

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Odds Relative Risk. Ratio Risk Difference (OR) (RR) (RD). Overall Estimate Fixed Effects. Random Effects. RD = Risk difference = P2 - P1. RR = Relative risk = P1 / P2. RRR = Relative risk reduction = (P2-P1)/P2. OR = Odds ratio = P1/(1-P1)/[P2/(1-P2)]. Discrete - Odds Ratio (OR). Odds: number of patients experiencing event number of patients not experiencing event Odds ratio: Odds in Experimental group. Discrete - Odds Ratio Example. Discrete - Relative Risk (RR).

Socio-economic status of youth non-participation in Yala province: Population-based study using Thailand 2000 census data

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Figure 2 Adjusted odds ratio for non-participation by socio-economic status. Figure 3 Adjusted odds ratio for non-participation by demographic factor. This study used a statistical model to explain youth non- participation in Yala province, southern Thailand using the 2000 Population and Housing Census data. It was found that socio-economic status and demographic factors were related to youth non-participation either at school or at work..

The value of the tumour-stroma ratio for predicting neoadjuvant chemoradiotherapy response in locally advanced rectal cancer: A case control study

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Multivariate analysis showed that the TSR was the only pre-treatment predictor of response to nCRT (adjusted odds ratio 0.40, 95% confidence interval P = 0.002).. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.. [email protected].

Ý NGHĨA CÁC GIÁ TRỊ

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Sau 5 năm có 5 người tử vong Nguy cơ tử vong (risk): p Odds tử vong: O RELATIVE RISK & ODDS RATIO (RR & OR)RELATIVE RISK & ODDS RATIO (RR & OR)• RR>1: yếu tố nguy cơ làm tăng khả • OR>1: khả năng mắc bệnh cao hơn năng mắc bệnh. khả năng không mắc bệnh.• RR=1: không có mối liên hệ nào giữa • OR=1: khả năng mắc bệnh tương yếu tố nguy cơ và khả năng mắc đương với khả năng không mắc bệnh bệnh.• RR10 Khả năng mắc bệnh cao LR-

Mild increases in plasma creatinine after intermediate to high-risk abdominal surgery are associated with long-term renal injury

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In multivariable analysis, development of postoperative AKI was independently associated with long-term renal injury (adjusted odds ratio [95%CI] of .

Quantitative Models in Marketing Research Chapter 5

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The interpretation of the logit model (5.26) follows again from the odds ratio. For most of the explanatory variables, the effects on the odds ratios are the same as in the Conditional and Multinomial Logit model specification. The odds ratio in (5.27) shows that the choice between two cate- gories depends only on the characteristics of the categories under considera- tion.

Epidural analgesia and avoidance of blood transfusion are associated with reduced mortality in patients with postoperative pulmonary complications following thoracotomic esophagectomy: A retrospective cohort study of 335 patients

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The multivariate approach depicted two independent procedural risk factors including transfusion of packed red blood cells (PRBCs) odds ratio of CI) for PPCs and an odds ratio of CI) for 90-days mortality. absence of thoracic epidural anesthesia (TEA) revealed the highest odds ratio CI) for PPCs and an odds ratio of CI) for 90-days mortality..

The impact of domestic remittances on left-behind older people in Vietnam

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If the elderly with retirement pensions are chosen to be the reference group in the model defining the determinants of the elderly’s poverty, the. estimated odds ratio is expected to be more than 1 for the comparative group (the elderly without retirement pensions).. If the urban elderly are selected to be the reference group, the estimat- ed odds ratio is expected to be larger than 1 for the comparative group (the rural elderly) in the internal remittance receiving model..

The skill of tracheal intubation with rigid scopes – a randomised controlled trial comparing learning curves in 740 intubations

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The geometric mean intubation time with the SensaScope was 1.23 times longer than with the Bonfils (95% CI 1.12–. 0.001), and the odds of having success at a given trial was reduced by a factor of 0.64 with the SensaScope compared to the Bonfils (95% CI p = 0.016).. We only found a tendency that consultants may increase the odds for first attempt success compared to registrars (odds ratio 1.7, 95% CI p = 0.05)..

Association between sleep disturbance and sarcopenia among older adults

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After adjustment for age, low education level, malnutrition, depression was associated with increased odds of greater sarcopenia remain significant (multivariable odds ratio (MOR CI higher than before adjustment OR CI for sleep disturbances.. The majority of the elderly getting poor sleep was 448 people (85.80%) with the score of PSQI ranging from 1 to 23, mean score of 9.39 (SD = 4.37)..

Class Notes in Statistics and Econometrics Part 8

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The odds ratio and the differences in probabilities do not give rise to such discrepancies: the odds ratio for not being hired is just the inverse of the odds ratio for being hired, and the difference in the probabilities of not being hired is the negative of the difference in the probabilities of being hired..

Extubation in the operating room results in fewer composite mechanical ventilationrelated adverse outcomes in patients after liver transplantation: A retrospective cohort study

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After cor- rection with confounding factors, extubation in the OR was associated with a significantly decreased risk of the composite mechanical ventilation-related adverse outcomes (Odds Ratio, 0.518. In matched patients, after correction with confounding factors, extubation in the OR remained associated with a significant reduction of the composite mechanical ventilation-related adverse outcomes (Odds Ratio, 0.514. Factors associated with OR extubation.

Trauma Scoring Systems

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A ratio of two odds greater than 1.0 indicates an increased risk for the outcome, whereas an odds ratio of less than 1.0 indicates a decreased risk or protective effect for the outcome. The odds of the age group of 75-84 years divided by the odds of the age group of 65-74 years produces an odds ratio of .

Prediction of hemodynamic fluctuations after induction of general anesthesia using propofol in non-cardiac surgery: A retrospective cohort study

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ASA-PS American Society of Anesthesiologists physical status, OR Odds ratio, CI Confidence interval. 2 Factors predicting enhanced blood pressure fluctuation with path coefficients and odds ratios (in parentheses. ASA-PS American Society of Anesthesiologists physical status. and higher dose of propofol were major two highly significant predictive factors for hypotension caused by propofol injection [2].

Nomogram for the prediction of postoperative hypoxemia in patients with acute aortic dissection

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The preoperative HCT (odds ratio [OR confidence interval [CI]: 0.80 to 0.98, p. 0.011), P/F ratio (OR CI: 0.99 to 1.00, p = 0.011), WBC (OR CI: 1.06 to 1.40, p = 0.008), BMI (OR CI: 1.15 to 1.54. 0.001), Stan- ford type (OR CI: 0.06 to 0.66. p = 0.011), pH (OR CI: 2*10 − 8 to 0.74. p = 0.048), and CPB time (OR CI: 0.98 to 1.00. p = 0.031) were significantly contributing to the prediction accur- acy of the model.

C-reactive protein concentration as a risk predictor of mortality in intensive care unit: a multicenter, prospective, observational study

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In the multivariable analysis, only APACHE II score (odds ratio, 1.166. P = 0.001), were significantly associated with an increased risk of ICU mortality.

CLINICAL PHARMACOLOGY 2003 (PART 6)

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An odds ratio of 1.0 indicates that the treatment has no effect, an odds ratio of 0.5 indicates a halving and an odds ratio of 2.0 indicates a doubling of the risk that patients will experience the chosen endpoint.. confidence intervals (CI), in the fourth column.. The size of the square is proportional to the number of events. The way in which data from therapeutic trials is presented can influence doctors' perceptions of the advisability of adopting a treatment in their routine practice..

The cumulative duration of bispectral index less than 40 concurrent with hypotension is associated with 90-day postoperative mortality: A retrospective study

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In the final multi- variable analysis, male sex, dysrhythmia, hemoglobin levels, albumin levels, and bis40map50_dur [odds ratio (OR), 1.26. P = .019] were associated with 90-day mortality (Table 2). P = .292) between patients with and without 90-day mortality.. 180-day mortality. P = .480) between patients who presented and who didn’t present double low (BIS <.

Evaluation of peripheral perfusion index and heart rate variability as early predictors for intradialytic hypotension in critically ill patients

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Higher baseline systolic blood pressure was associated with lower risk of intradialytic hypotension (odds ratio [95. The incidence of intradialytic hypotension was higher in patients admitted to dialysis due to pulmonary edema (odds ratio [95% con- fidence interval . Baseline HRV and baseline PPI showed good predict- ive ability of intradialytic hypotension {AUROC (95%. In our results PPI showed good predictive ability for intradialytic hypotension.