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Table 1 Descriptive characteristics of male prisoners and guards at Beon prison

From: Cross-sectional dietary deficiencies among a prison population in Papua New Guinea

Characteristic Prisoners n=148a Guards n=13a P b
Mean (SD) Mean (SD)
Age (years) 31.0 (7.93) 47.3 (10.2) <0.001
Height (cm) 164 (6.83) 167 (4.27) 0.112
Weight (kg) 60.6 (6.92) 75.8 (14.1) <0.001
BMI (kg/m2) 22.5 (2.25) 27.1 (5.22) <0.001
Time incarceration at Beon (months) 24.7 (27.9) -  
  n (%) n (%)  
Smoking status    
 Current 103 (71) 3 (23) <0.001
 Past 31 (21) 0 (0)  
 Never 12 (8.2) 10 (77)  
Tobacco use    
 None 43 (29) 9 (75)  
 <1 cigarette/day 48 (33) 0 (0) 0.001
 1-10 cigarettes/day 46 (32) 1 (8.3)  
 ≥10 cigarettes/day 9 (6.2) 2 (17)  
Alcohol status    
 Current 19 (13) 8 (62) <0.001
 Past 115 (79) 0 (0)  
 Never 12 (8.2) 5 (38)  
Alcohol consumption    
 None 128 (90) 5 (38)  
 <1 unit/day 1 (0.7) 0 (0) <0.001
 1-2 units/day 2 (1.4) 2 (15)  
 ≥3 units/day 12 (8.4) 6 (46)  
  1. a Not all data are complete.
  2. b P value generated from Student’s t-test (parametric data) or Fisher’s exact test (non-parametric data).
  3. c Unit of alcohol = 1 bottle/can beer, 125 mL home-made alcohol, 1 glass of wine or 10 mL spirits.