α is a stable factor, and generally, the scope of α is 0.01 ~ 0.03, which is mainly used to ensure the stability of the algorithm by controlling the value of ∆E.
Substrate type (Table 1), for instance, is a stable factor, and for Tropheus as an algae scraping cichlid, the variation from pebbles to plain rock may highly influence infection risk.
However, when talking about youth's education access, we consider family background to be a stable ascribed factor uncontrolled by the youth and subject to macrosocial structure, and therefore include it in the macro study category.
The findings that high baseline compliance is a strong predictor of later compliance and the importance of the patients' attitude towards treatment suggest that compliance might be a rather stable factor in the treatment course of bipolar patients.
Thus, subjects' importance and consistency ratings of most life value domains appear to be a reasonably stable factor that can be used in prospective correlation studies.
Therefore, our aim was to determine whether a stable factor structure existed within the scale.
18– 21 In Swedish samples, the SPSQ has been shown to have a stable factor pattern constituting the subscales incompetence, role restriction, social isolation, spouse relationship problems and health problems.
This revised version was found to have a stable factor structure, high internal consistency for the full scale (ranged from 0.81 to 0.93) and for the subscales (ranged from 0.65 to 0.90), good to excellent test-retest reliability (coefficient r ranged from 0.57 to 0.91), good discriminant validity and satisfactory convergent validity.
Neuroticism for example, defined as an enhanced tendency of experiencing negative emotions such as stress, anxiety and anger, is a stable, heritable personality factor (Lesch et al. 1996) with approximately 50% of the variance accounted for by genetic factors (Canli 2008; Kendler et al. 2006).
In this study, construct validity of the diabetes module has not been assessed because the sample size (94 patients) is rather small to conduct a stable factor analysis.
