What's the difference between causality and correlation?

Causality


Definition:

  • (n.) The agency of a cause; the action or power of a cause, in producing its effect.
  • (n.) The faculty of tracing effects to their causes.

Example Sentences:

  • (1) Consensual but rationally weak criteria devised to extract inferences of causality from such results confirm the generic inadequacy of epidemiology in this area, and are unable to provide definitive scientific support to the perceived mandate for public health action.
  • (2) The electrical stimulation of the tail associated to a restraint condition of the rat produces a significant increase of immunoreactive DYN in cervical, thoracic and lumbar segments of spinal cord, therefore indicating a correlative, if not causal, relationship between the spinal dynorphinergic system and aversive stimuli.
  • (3) The 14-fold increase in prolonged apnea frequency immediately following regurgitation supports the hypothesis for a causal relationship between apnea and regurgitation.
  • (4) The method is implemented with a digital non-causal (zero-phase shift) filter, based on the convolution with a finite impulse response, to make the computation time compatible with the use of low-cost microcomputers.
  • (5) Treatment was divided into two categories named arbitrarily "no therapy" (general supportive measures) or "therapy" (causal treatment based on active drugs or measures aimed at affecting the cause of the disease).
  • (6) The most important causal factor, well illustrated by pressure studies, was the presence of a dynamic or static deformity leading to local areas of peak pressure on insensitive skin.
  • (7) The results support Kuiper and colleagues' distinction between concomitant and vulnerability schemas, and help to clarify differences between cognitions that are symptoms or correlates of depression and those that may play a causal role under certain conditions.
  • (8) This inhibition was correlated with the enhanced Ado toxicity, suggesting inhibition of methylation as a possible causal factor for the great increase in Ado sensitivity.
  • (9) It is felt that the use of quinidine was causally related to the development of nephrotic syndrome in this patient.
  • (10) Epidemiological criteria for a causal association between snoring and vascular disease have not been satisfied.
  • (11) Although the pathophysiology of the pancreatic injury is obscure, the lack of other etiological factors and temporal association of the pancreatitis with acetaminophen-induced hepatic and renal toxicity suggest a causal relationship.
  • (12) Twenty-three unique causal pathways to diabetic limb amputation were identified.
  • (13) With tetrachlorodecaoxide (TCDO), a causal therapeutic concept for the topical treatment of infected hypoxic wounds with chronic disturbance of wound healing has been introduced for the first time.
  • (14) A recording which implies mtabolic disorder should prompt the immediate search for the causal disturbance.
  • (15) It is not possible to say whether the changes in PRA and function are causally related or whether changes in plasma sodium alone account for the observed changes in PRA.
  • (16) The human mutant proteins were isolated by immunoaffinity and shown to have altered enzymatic properties demonstrating the causality of these two allelic mutations for Gaucher disease.
  • (17) Using this approach, a potential causal linkage between early functional patterns and late structural abnormalities was examined in glomeruli of two established rat models of glomerular sclerosis.
  • (18) Nonexperimental and experimental studies related to handwashing were reviewed and evidence for a causal association evaluated.
  • (19) Mitochondria may also be causally related to the cytotoxic or antitumor activities, in that DPPE may be concentrated in cells via the presence of the inner mitochondrial membrane potential.
  • (20) Whether these two effects are causally related awaits future study.

Correlation


Definition:

  • (n.) Reciprocal relation; corresponding similarity or parallelism of relation or law; capacity of being converted into, or of giving place to, one another, under certain conditions; as, the correlation of forces, or of zymotic diseases.

Example Sentences:

  • (1) In each sheep there was a significant negative correlation between the glucose and corticosteroid concentrations in both maternal and fetal plasma, and there were positive correlations between the maternal and fetal plasma concentrations of glucose, and between the glucose and fructose concentrations of fetal plasma.
  • (2) Correction for within-person variation in urinary excretion increased this partial correlation coefficient between intake and excretion to 0.59 (95% CI = 0.03 to 0.87).
  • (3) Ca2+ transport was positively correlated with MR cell density.
  • (4) Subsequently, the study of bundle branch block and A-V block cases revealed that no explicit correlation existed between histopathological changes and functional disturbances nor between disturbances in conduction (i.e.
  • (5) Irrespective of the type of arthropathy, synovial fluid dialysable hydroxyproline levels correlate with urinary hydroxyproline excretion.
  • (6) These membrane perturbation effects not observed with bleomycin-iron in the presence of a hydroxyl radical scavenger, dimethyl thiourea, or a chelating agent, desferrioxamine, were correlated with the ability of the complex to generate highly reactive oxygen species.
  • (7) However, there was no correlation between the length of time PN was administered to onset of cholestasis and the gestational age or birth weight of the infants.
  • (8) The correlates of three characteristics of familial networks (i.e., residential proximity, family affection, and family contact) were examined among a national sample of older Black Americans.
  • (9) When the data correlating DHT with protein synthesis using both labelling techniques were combined, the curves were parallel and a strong correlation was noted between DHT and protein synthesis over a wide range of values (P less than 0.001).
  • (10) Plasma NPY correlated better with plasma norepinephrine than with epinephrine, indicating its origin from sympathetic nerve terminals.
  • (11) Large gender differences were found in the correlations between the RAS, CR, run frequency, and run duration with the personality, mood, and locus of control scores.
  • (12) Based on several previous studies, which demonstrated that sorbitol accumulation in human red blood cells (RBCs) was a function of ambient glucose concentrations, either in vitro or in vivo, our investigations were conducted to determine if RBC sorbitol accumulation would correlate with sorbitol accumulation in lens and nerve tissue of diabetic rats; the effect of sorbinil in reducing sorbitol levels in lens and nerve tissue of diabetic rats would be reflected by changes in RBC sorbitol; and sorbinil would reduce RBC sorbitol in diabetic man.
  • (13) Using multiple regression, a linear correlation was established between the cardiac index and the arterial-venous pH and PCO2 differences throughout shock and resuscitation (r2 = .91).
  • (14) These correlations were significant at the p = 0.005 level.
  • (15) A significant correlation was found between the amplitude ratio of the R2 and the sensitivity ratio of the rapid off-response at short and long wavelengths.
  • (16) Measures of average and cumulative rank were used to augment tests of the significance of correlations between different indicators.
  • (17) Glucose release from these samples was highly correlated with starch gelatinization (r2 = .99).
  • (18) Positivity was not correlated with current residence census tract socioeconomic indicators in black or white females.
  • (19) Survival was independent of the type of clinical presentation and protocol employed but was correlated with the stage (P less than 0.0005), symptoms (P less than 0.025), bulky disease (P less than 0.025) and bone marrow involvement (P less than 0.025).
  • (20) The intensity of the type III specific peptide bands correlates with the type III content of the samples.