Related Experiment Video
Updated: Feb 14, 2026

Studying Effects of Cigarette Smoke on Pseudomonas Infection in Lung Epithelial Cells
Published on: May 11, 2020
The synergistic effect between Positivity, socio-demographic factors and smoking cessation: results of a cohort study
M C Grassi1, G Alessandri2, S Pasquariello3
1Department of Physiology and Pharmacology V. Erspamer, Sapienza University of Rome.
Objective:
To examine the extent to which a effect does exist between Positivity (POS), smoking and socio-demographic factors in determining quitting smoking in subjects participating in a Group Counselling Program (GCP) for smoking cessation.
Methods:
481 subjects were contacted through a telephone call. A logistic regression analysis was carried out. Possible interaction between sociodemographic variables and POS level was tested using the Synergism Index (SI).
Results:
For individuals with a POS level over or equal to 3.4 the odds of being smoker was significantly higher among females (OR = 1.55), who smoked at home (OR = 2.16) and lower if there had children at home (OR = 0.53). For individuals with a POS level under 3.4, the only significant variable associated with smoking was beinga female (OR = 2.58). As far concerns the synergistic effect between the variables considered does exist between POS levels and having children at home (SI=1.13) and female gender (SI = 2.8).
Conclusions:
The synergistic effect between POS and sociodemographic factors adds evidence on the use of POS as possible determinants of individual happiness.
Related Concept Videos
Position-effect Variegation
Transcription Factors
Position and Displacement
Serial Position Effect
Position Vectors
For instance, we want to locate a point P(x, y, z) relative to the origin of coordinates O. In that case, we can define a position...
Anatomical Positions
The body is upright, facing forward, and standing erect.
The feet are parallel and flat on the floor.
The arms are hanging by the...

