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Table 2 Logistic regression analyses of having never been to the dentist

From: Time trends in socio-economic inequalities in the lack of access to dental services among children in Spain 1987-2011

  M 1 Fixed effect M 2 Fixed-Random effect
Odds ratio (95% Conf. Interval) Odds ratio (95% Conf. Interval)
Intercept 2.34*** (1.67; 3.29) 1.63*** (1.16; 2.28)
Sex   
Boy 1.00 1.00
Girl 0.91*** (0.86; 0.97) 0.91*** (0.86; 0.97)
Age   
6–8 years old 1.00 1.00
9–11 years old 0.43*** (0.39; 0.46) 0.43*** (0.39; 0.46)
12–14 years old 0.33*** (0.31; 0.36) 0.33*** (0.31; 0.36)
Social class   
Upper non-manual 1.00 1.00
Lower non-manual 1.39* (1.01; 1.90) 1.39** (1.02; 1.90)
Skilled manual 1.52** (1.11; 2.07) 1.51*** (1.11; 2.06)
Unskilled manual 2.35*** (1.71; 3.23) 2.36*** (1.71; 3.24)
Time variables   
Year 1987 1.00 1.00
Year 1993 0.77 (0.52; 1.13) 0.79 (0.63; 1.42)
Year 1995–97 0.51*** (0.33; 0.77) 0.53*** (0.35; 0.80)
Year 2001 0.37*** (0.22; 0.63) 0.40*** (0.24; 0.67)
Year 2003 0.31*** (0.19; 0.52) 0.34*** (0.21; 0.55)
Year 2006 0.20*** (0.12; 0.34) 0.22*** (0.13; 0.36)
Year 2011 0.22*** (0.12; 0.41) 0.25*** (0.14; 0.45)
  Regions have been omitted from table coefficients (see Figure 2)  
  Results for interaction terms for time and occupational class have been omitted from table (see Figure 3)
Rate of dentists   
per 100,000 inhabitants 0.98*** (0.98; 0.99) 0.98*** (0.97; 0.99)
Dental care programme (PADI)   
Children without PADI 1.00 1.00
Children with PADI 0.82*** (0.71; 0.95) 0.82*** (0.71; 0.94)
   Random parameters
Variance (95% Conf. Interval)
Error variance   
Intercept   0.03 (0.01; 0.06)
Regression diagnostics   
Intra-class correlation ICC   1.8%
Log likelihood −11636.83 −11664.07
AIC 23371.66 23396.14
BIC 23770.43 23672.85
N° of observation 24689 24689
  1. Note: Standard errors in brackets; ***p < 0.01, **p < 0.05, *p < 0.1.