1 2 Gray Matter Heterotopia patients report severe insomnia (40%). 2  0 Gray Matter Heterotopia patients report moderate insomnia (0%). 3  2 Gray Matter Heterotopia patients report mild insomnia (40%). 4  1 Gray Matter Heterotopia patients report no insomnia (20%).
Economic stability refers to the an absence of excessive fluctuations in the macroeconomy. An economy with fairly constant output growth and low and stable inflation would be considered economically stable. An economy with frequent large recessions, a pronounced business cycle, very high or variable inflation, or frequent financial crises would be considered economically unstable.
2. Definitions of stability and instability. White et al. defined clinical stability as the spine's ability under physiologic loads to limit patterns of displacement in order not to damage or irritate the spinal cord and nerve roots and to prevent incapacitating deformity or pain caused by structural changes [3].