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Table 6 Variance estimates (se) from multilevel logistic regression for elective Caesarean sections for Health Board and Postcode Sector, Scotland 1980-2000

From: The influence of both individual and area based socioeconomic status on temporal trends in Caesarean sections in Scotland 1980-2000

    1980-81   
  Null Maternal factors Model SC Model AD Model SC+AD
All Births      
Health Board 0.728 (0.281) 0.707 (0.274) 0.707 (0.274) 0.690 (0.267) 0.688 (0.266)
Postcode Sector 0.026 (0.010) 0.03 (0.011) 0.03 (0.011) 0.028 (0.011) 0.028 (0.011)
No previous Caesarean section    
Health Board 0.809 (0.325) 0.809 (0.326) 0.808 (0.325) 0.794 (0.320) 0.795 (0.320)
Postcode Sector 0.064 (0.023) 0.079 (0.025) 0.079 (0.025) 0.078 (0.025) 0.078 (0.025)
Previous Caesarean section    
Health Board 0.988 (0.386) 1.099 (0.428) 1.102 (0.429) 1.044 (0.408) 1.037 (0.405)
Postcode Sector 0.053 (0.028) 0.032 (0.028) 0.034 (0.028) 0.028 (0.028) 0.029 (0.028)
    1990-91   
  Null Maternal factors Model SC Model AD Model SC+AD
All Births      
Health Board 0.038 (0.018) 0.023 (0.011) 0.023 (0.011) 0.023 (0.011) 0.023 (0.011)
Postcode Sector 0.02 (0.010) 0.011 (0.010) 0.011 (0.010) 0.011 (0.010) 0.011 (0.010)
No previous Caesarean section    
Health Board 0.054 (0.029) 0.031 (0.019) 0.03 (0.019) 0.03 (0.019) 0.03 (0.019)
Postcode Sector 0.081 (0.038) 0.063 (0.019) 0.063 (0.037) 0.063 (0.037) 0.063 (0.037)
Previous Caesarean section    
Health Board 0.058 (0.028) 0.040 (0.021) 0.040 (0.021) 0.039 (0.020) 0.039 (0.020)
Postcode Sector 0.040 (0.021) 0.035 (0.023) 0.035 (0.023) 0.034 (0.023) 0.034 (0.023)
    1999-2000  
  Null Maternal factors Model SC Model AD Model SC+AD
All Births      
Health Board 0.037 (0.018) 0.03 (0.015) 0.031 (0.015) 0.034 (0.016) 0.034 (0.016)
Postcode Sector 0.087 (0.015) 0.066 (0.014) 0.065 (0.014) 0.063 (0.014) 0.062 (0.014)
No previous Caesarean section    
Health Board 0.123 (0.058) 0.100 (0.048) 0.100 (0.048) 0.113 (0.053) 0.112 (0.053)
Postcode Sector 0.211 (0.043) 0.153 (0.038) 0.151 (0.038) 0.144 (0.038) 0.144 (0.037)
Previous Caesarean section    
Health Board 0.072 (0.035) 0.063 (0.031) 0.065 (0.032) 0.066 (0.032) 0.066 (0.032)
Postcode Sector 0.106 (0.030) 0.095 (0.032) 0.095 (0.032) 0.094 (0.032) 0.094 (0.032)
  1. Null model - contains intercept only
  2. Maternal factors - adjusts for maternal age, maternal height, parity, gestational age and marital status
  3. Model SC (social class) - additionally adjusts only for social class
  4. Model AD (area deprivation) - additionally adjusts only for area deprivation
  5. Model SC+AD - additionally adjusts for both social class and area deprivation