Skip to main content
. 2012 Jul 31;13:89. doi: 10.1186/1471-2202-13-89

Table 4.

Slow spindle percentage in OSA according to topography and night sections

 
 
  
 Total
 Non-OSA
 Mild OSA
 Mod OSA
 Chi-square
 df
    (28) (7) (11) (10)    
Location
 Night Section
  
  
  
  
  
  
Frontal
 total∗∗∗
 72.3
 66.4
 71.0
 78.8c,f
 39,623
 2
 
 I
 72.1
 68.3
 71.2
 76.1
 6,041
 2
 
 II∗∗
 75.6
 75.2
 70.8
 81.3c
 12,242
 2
 
 III∗∗∗
 69.0
 57.7
 70.9c
 79.2a,f
 33,613
 2
Central
 total∗∗∗
 47.7
 32.6
 45.7c
 61.7c,f
 192,429
 2
 
 I∗∗∗
 53.1
 41.4
 48.6
 65.7c,f
 50,435
 2
 
 II∗∗∗
 43.8
 26.7
 42.3c
 55.9c,f
 63,836
 2
 
 III∗∗∗
 46.4
 29.5
 46.3c
 64.1c,f
 86,224
 2
Parietal
 total∗∗∗
 32.6
 17.9
 29.9c
 50.9c,f
 297,793
 2
 
 I∗∗∗
 38.9
 23.2
 34.7c
 57.4c,f
 101,732
 2
 
 II∗∗∗
 27.0
 17.4
 22.8
 41.9c,f
 71,609
 2
  III∗∗∗ 32.4 13.3 32.7c 54.1c,f 133,466 2

Mod, moderate; df, degrees of freedom; Location, scalp EEG topography; total, (I+II+III) sample; I, II and III, initial, middle and final night sections, respectively. P-value significance as follows: ∗<0.05, ∗∗<0.01, ∗∗∗<0.001. Significance of post-hoc inter-group comparisons (with Bonferroni correction for multiple comparisons) as follows: a<0.05, b<0.01, c<0.001 for contiguous comparisons; d<0.05, e<0.01, f<0.001 for non-contiguous comparisons.