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  • Spurious correlation  (1)
  • indapamide  (1)
  • 1
    Electronic Resource
    Electronic Resource
    The spectre of ‘spurious’ correlations (1991)
    Springer
    Oecologia 86 (1991), S. 147-151 
    Details
    ISSN: 1432-1939
    Keywords: Spurious correlation ; Ratios ; Statistical inference ; Randomization tests ; Data standardization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Ecologists often ‘standardize’ data through the use of ratios and indices. Such measures are employed generally to remove a ‘size effect’ induced by some relatively uniteresting variable. The implications of using the resultant data in correlation and regression analyses are poorly recognized. We show that ratios and indices often provide surprising and ‘spurious’ results due to their unusual properties. As a solution, we advocate the use of randomization tests to evaluate hypotheses confounded by ‘spurious’ correlations. In addition, we emphasize that identifying the appropriate null correlation is of utmost importance when statistically evaluating ratios, although this issue is frequently ignored.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00317404
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  • 2
    Electronic Resource
    Electronic Resource
    Nadolol in combination with indapamide and xipamide in resistant hypertensives (1985)
    Springer
    European journal of clinical pharmacology 28 (1985), S. 29-33 
    Details
    ISSN: 1432-1041
    Keywords: nadolol ; indapamide ; xipamide ; resistant hypertension ; compliance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Twenty-four hypertensive patients have been studied. All had blood pressure recordings greater than 160/95 mmHg on 3 occasions whilst taking a beta blocker and two other antihypertensive agents in therapeutic doses. Compliance was checked by intermittent urine analysis for the relevant beta-blocker. These difficult to control hypertensives were treated with nadolol alone, nadolol plus indapamide and nadolol plus xipamide each for 2 months in random order. The aim was to reduce the blood pressure to below 160/95 mmHg. The supine blood pressure on nadolol alone (167/100 mmHg) was comparable to that on the previous three drug regimens (157/100 mmHg), the other two treatments were more effective (145/90 and 148/93 mmHg respectively). Hypokalaemia (serum potassium below 3.5 mmol/l) occurred in six individuals but occurred more frequently on xipamide than on indapamide.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00635704
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    Paper (German National Licenses)
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