Comparison of Stopping Rules in Forward “Stepwise” Regression

Bendel, Robert B.; Afifi, Abdelmonem A.

doi:10.1080/01621459.1977.10479905

Cited by 381 publications

(316 citation statements)

References 10 publications

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“…We used the Mann-Whitney U test to compare quantitative variables. The third statistical step consisted of a logistic regression analysis [2] with presence of SI (1 when present, 0 when absent) as dependent variable. The independent variables in this analysis were selected from the bivariate analysis with a 0.25 level as a screening criterion for selection of candidate variables.…”

Section: Methodsmentioning

confidence: 99%

Silent infarcts in stroke patients: patient characteristics and effect on 2-year outcome

Corea

Hénon

Pasquier

et al. 2001

Journal of Neurology

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Although silent infarcts (SIs) are frequent in stroke patients, their clinical significance remains controversial, and their effect on stroke outcome remains unclear. This study evaluated the prevalence of SI on computed tomography, associated factors, and the effect on outcome in stroke patients. We studied 202 consecutive patients admitted for acute ischaemic or haemorrhagic stroke with clinical deficits lasting more than 24 h. Survivors were followed up for 24 months; no patient was lost to follow-up. Patients with Rankin scores of 2 or lower were considered separately. New vascular events were also recorded. Computed tomography showed that one-fourth of patients (52/202) had at least one SI; these were located in deep hemispheric areas in 46 patients, superficial hemispheric areas in 5, and the posterior fossa in 7. Logistic regression analysis showed the factors independently associated with SI to be severe leukoaraiosis (OR 1.71, 95% CI 1.26-2.31) and small-vessel occlusion as presumed cause of the index stroke (OR 2.66, 95% CI 1.22-5.79). SI did not affect vital or functional outcome or the occurrence of new vascular events within 2 years after stroke. Whether they affect cognitive outcome remains under evaluation over a longer follow-up period.

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Section: Methodsmentioning

confidence: 99%

Silent infarcts in stroke patients: patient characteristics and effect on 2-year outcome

Corea

Hénon

Pasquier

et al. 2001

Journal of Neurology

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“…The covariates were selected for inclusion in the model using forward stepwise selection methods from SAS (2002) software packages. The entry and removal p values were set at 0.15 according to the suggestions of Bendel et al [21] and Costanza et al [22]. In their studies, they indicated that the use of a p value of 0.05 tends to exclude too many important covariates and one should choose a level of significance of 0.15.…”

Section: Methodsmentioning

confidence: 99%

Factors that affect recurrence after anterior colporrhaphy procedure reinforced with four-corner anchored polypropylene mesh

et al. 2004

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The purpose of this study was to evaluate the effectiveness of the anterior colporrhaphy procedure reinforced with four-corner anchored polypropylene mesh in patients with severe (stage III or IV) anterior vaginal prolapse. Thirty-eight consecutive women were enlisted for this prospective study. The procedure consisted of an extensive vaginal dissection to join the vesicovaginal and retropubic space and an anchoring of a polypropylene mesh patch between the two Arcus Tendineus Fasciae Pelvis in a tension-free manner. The mean age of the study group was 63 (33-80) years. The success rate was 87% (33/38) at a mean follow-up interval of 21 (12-29) months. A total of eight (100%) patients were also cured of concomitant stress incontinence (five overt and three occult type) with an additional tension-free vaginal tape (TVT) operation. During follow-up, there were five de-novo stress incontinence cases (16.7%) and four vaginal erosions of mesh (10.5%). Four clinical variables--diabetes mellitus, recurrent anterior vaginal prolapse, chronic cough and vaginal erosions of mesh--were found to have a significant correlation with an unsatisfactory surgical result with large values of hazard ratios found by survival analysis. We concluded that the anterior colporrhaphy procedure reinforced with four-corner anchored polypropylene mesh was effective for most, but failed in some patients who had specific risk factors within short convalescence periods. Concomitant stress incontinence can be successfully treated by a TVT operation in combination with the anterior colporrhaphy procedure reinforced with four-corner anchored polypropylene mesh. However, the anterior colporrhaphy procedure may itself have adverse effects on urethral sphincter function.

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“…Covariates were selected for inclusion in the analysis by using forward selection methods from SAS (2002) software packages. The p value for entry and removal of variables were set at 0.15 according to suggestions by Bendel et al [18] and Costanza et al [19]. In their studies, the authors indicated that the use of a p value of 0.05 tends to exclude too many important covariates (i.e., type I statistical error) and that one should choose a level of significance of 0.15.…”

Section: Methodsmentioning

confidence: 99%

Risk factors that affect the treatment of interstitial cystitis using intravesical therapy with a dimethyl sulfoxide cocktail

et al. 2012

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Comparison of Stopping Rules in Forward “Stepwise” Regression

Cited by 381 publications

References 10 publications

Silent infarcts in stroke patients: patient characteristics and effect on 2-year outcome

Silent infarcts in stroke patients: patient characteristics and effect on 2-year outcome

Factors that affect recurrence after anterior colporrhaphy procedure reinforced with four-corner anchored polypropylene mesh

Risk factors that affect the treatment of interstitial cystitis using intravesical therapy with a dimethyl sulfoxide cocktail

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