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Table 6 Logistic regression analysis of determinants for use of garbage codes in Norway 1996–2019

From: Garbage codes in the Norwegian Cause of Death Registry 1996–2019

Explanatory variable All GC (%)
N = 290,469
All deaths
N = 1,000,128
Single predictor models Multiple predictor model
OR (95% CI) LR stat* p value OR (95% CI) LR stat* p value
Year of death      1645 <  0.001    3644 <  0.001
 1996–1999 52,658 (29.7) 177,043 1 (ref.)     1 (ref.)    
 2000–2004 63,900 (29.8) 214,402 1.00 (0.99–1.02)    0.96 (0.95–0.98)   
 2005–2009 63,257 (30.8) 205,178 1.05 (1.04–1.07)    0.96 (0.95–0.98)   
 2010–2014 59,618 (29.3) 203,647 0.98 (0.96–0.99)    0.85 (0.84–0.86)   
 2015–2019 51,036 (25.5) 199,858 0.81 (0.81–0.82)    0.68 (0.67–0.69)   
Sex      5454 <  0.001    482 <  0.001
 Female 165,971 (32.3) 513,851 1 (ref.)     1 (ref.)    
 Male 124,498 (25.6) 486,277 0.72 (0.72–0.73)    0.90 (0.89–0.91)   
Age at death      48,158 <  0.001    30,379 <  0.001
 Under 1 127 (2.98) 4264 1 (ref.)     1 (ref.)    
 1–4 150 (14.6) 1029 5.56 (4.34–7.13)    4.57 (3.56–5.86)   
 5–14 214 (14.7) 1453 5.63 (4.48–7.09)    4.44 (3.54–5.60)   
 15–49 9185 (19.6) 46,910 7.93 (6.67–9.52)    5.87 (4.93–7.05)   
 50–79 73,320 (19.0) 385,304 7.66 (6.45–9.18)    5.81 (4.89–6.97)   
 80–89 122,138 (33.1) 369,224 16.1 (13.6–19.3)    11.3 (9.49–13.5)   
 90–115 85,335 (44.5) 191,944 26.1 (22.0–31.3)    17.4 (14.6–20.9)   
Place of death      25,291 <  0.001    10,369 <  0.001
 Hospital 74,666 (20.4) 366,855 1 (ref.)     1 (ref.)    
 Nursing home 157,632 (36.3) 434,271 2.23 (2.21–2.25)    1.62 (1.60–1.64)   
 At home 44,238 (29.6) 149,203 1.65 (1.63–1.67)    1.76 (1.73–1.78)   
 Other known 9037 (26.1) 34,620 1.38 (1.35–1.42)    1.84 (1.79–1.89)   
 Unknown 4896 (32.3) 15,179 1.86 (1.80–1.93)    2.08 (2.00–2.15)   
Autopsy      9761 <  0.001    1828 <  0.001
 No autopsy 276,032 (30.3) 911,192 1 (ref.)     1 (ref.)    
 Non-forensic 5752 (12.3) 46,862 0.32 (0.31–0.33)    0.56 (0.55–0.58)   
 Forensic 8685 (20.6) 42,074 0.60 (0.58–0.61)    0.83 (0.81–0.85)   
  1. Data source: NCoDR
  2. LR stat: Likelihood ratio statistic (−2LogL)