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Table 2 Multivariable Cox regression, separate by gender. Hazard ratios (95% confidence interval), adjusted for follow-up time

From: Socioeconomic and geographic differences in ablation of atrial fibrillation in Norway - a national cohort study

  Model 1 (HT)   Model 2 (RHA)
  Female Male   Female Male
Education    Education   
Low 1.0 (ref) 1.0 (ref) Low 1.0 (ref) 1.0 (ref)
Medium 1.31 (1.19 - 1.45) 1.28 (1.20 - 1.37) Medium 1.32 (1.19 - 1.45) 1.29 (1.21 - 1.38)
High 1.34 (1.19 - 1.51) 1.62 (1.51 - 1.74) High 1.36 (1.21 - 1.53) 1.67 (1.55 - 1.79)
Income    Income   
Low 1.0 (ref) 1.0 (ref) Low 1.0 (ref) 1.0 (ref)
Medium 1.20 (1.10 - 1.31) 1.54 (1.42 - 1.67) Medium 1.20 (1.10 - 1.31) 1.54 (1.42 - 1.67)
High 1.40 (1.23 - 1.59) 1.84 (1.69 - 2.00) High 1.37 (1.21 - 1.56) 1.82 (1.68 - 1.97)
Follow-up time (years)    Follow-up time (years)  
1 1.0 (ref) 1.0 (ref) 1 1.0 (ref) 1.0 (ref)
2 0.68 (0.61 - 0.76) 0.86 (0.81 - 0.91) 2 0.68 (0.61 - 0.75) 0.85 (0.80 - 0.91)
3 0.63 (0.56 - 0.71) 0.64 (0.60 - 0.69) 3 0.63 (0.56 - 0.71) 0.64 (0.59 - 0.69)
4 0.58 (0.51 - 0.67) 0.70 (0.65 - 0.75) 4 0.58 (0.50 - 0.66) 0.70 (0.64 - 0.75)
5 0.68 (0.59 - 0.79) 0.62 (0.56 - 0.68) 5 0.68 (0.58 - 0.79) 0.62 (0.56 - 0.67)
6 0.73 (0.61 - 0.86) 0.63 (0.57 - 0.70) 6 0.73 (0.61 - 0.87) 0.63 (0.57 - 0.70)
7 0.85 (0.71 - 1.03) 0.63 (0.56 - 0.71) 7 0.86 (0.71 - 1.03) 0.63 (0.56 - 0.71)
8 0.63 (0.49 - 0.82) 0.62 (0.53 - 0.71) 8 0.64 (0.49 - 0.82) 0.62 (0.53 - 0.72)
9 0.62 (0.45 - 0.86) 0.59 (0.49 - 0.71) 9 0.63 (0.45 - 0.86) 0.59 (0.49 - 0.71)
10 or more 0.37 (0.21 - 0.66) 0.33 (0.24 - 0.46) 10 or more 0.37 (0.21 - 0.66) 0.33 (0.24 - 0.46)
Hospital referral area (HT)    Regional referral area (RHA)  
Finnmark (N) 0.39 (0.23 - 0.66) 0.62 (0.48 - 0.80) North 0.61 (0.52 - 0.72) 0.83 (0.76 - 0.90)
UNN (N) 0.52 (0.39 - 0.69) 0.81 (0.70 - 0.94) Central 1.43 (1.29 - 1.59) 1.52 (1.43 - 1.62)
Nordland (N) 0.45 (0.32 - 0.63) 0.82 (0.70 - 0.97) West 0.79 (0.72 - 0.87) 1.01 (0.95 - 1.07)
Helgeland (N) 0.73 (0.53 - 1.00) 0.80 (0.66 - 0.97) South-East 1.0 (ref) 1.0 (ref)
Nord-Trøndelag (C) 0.86 (0.66 - 1.12) 1.14 (0.98 - 1.32)    
St. Olavs (C) 1.50 (1.26 - 1.78) 1.78 (1.61 - 1.97)    
Møre-Romsdal (C) 1.19 (0.99 - 1.44) 1.24 (1.10 - 1.39)    
Førde (W) 0.81 (0.60 - 1.10) 0.83 (0.70 - 1.00)    
Bergen (W) 1.09 (0.92 - 1.29) 1.27 (1.15 - 1.40)    
Fonna (W) 1.18 (0.96 - 1.47) 1.29 (1.13 - 1.46)    
Stavanger (W) 0.38 (0.32 - 0.46) 0.65 (0.58 - 0.72)    
Østfold (SE) 0.84 (0.69 - 1.02) 0.95 (0.85 - 1.07)    
Akershus (SE) 0.81 (0.69 - 0.96) 0.94 (0.85 - 1.04)    
OUS (SE) 0.90 (0.73 - 1.10) 1.00 (0.89 - 1.13)    
Lovisenberg (SE) 0.97 (0.71 - 1.32) 0.90 (0.73 - 1.10)    
Diakonhjemmet (SE) 0.91 (0.70 - 1.17) 1.02 (0.88 - 1.18)    
Innlandet (SE) 0.67 (0.56 - 0.81) 0.80 (0.71 - 0.89)    
Vestre Viken (SE) 1.0 (ref) 1.0 (ref)    
Vestfold (SE) 0.78 (0.64 - 0.95) 0.87 (0.77 - 0.99)    
Telemark (SE) 1.05 (0.86 - 1.29) 1.13 (1.00 - 1.28)    
Sørlandet (SE) 0.90 (0.74 - 1.08) 0.98 (0.87 - 1.10)    
Interactions with attained age (p-values)    Interactions with attained age (p-values)
Education <0.001 <0.001 Education <0.001 0.001
Income 0.53 0.17 Income 0.85 0.06
Area (HT) <0.001 0.50 Area (RHA) <0.001 0.25