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Table 2 Characteristics of drug use

From: Modeling predictors of risky drug use behavior among male street laborers in urban Vietnam

Variable (N = 450) x ¯ ± SD N (%)
Lifetime drug use (N = 450)   77(17.11)
Average age at first use (N = 77, range = 15-50) 26.95 ± 9.69  
Lifetime drug injection (77)   75(97.40)
Average age at first injection (N = 75, range = 16-51) 29.12 ± 9.79  
Injection use during the past month (n = 77)   
  Frequency of injection (range = 0-6)* 3.4 ± 1.38  
  None during the past month   2(2.60)
  Less than monthly   6(7.80)
  Around once per month   12(15.6)
  A few times per month   26(33.76)
  Weekly   17(22.08)
  A couple of times per week   5(6.49)
  Daily   9(11.69)
Sharing syringes and needles given by other users during the past month (N = 75)   
  Frequency of sharing syringes and needs (range = 0-5)* 3.01 ± 1.31  
  Never   1(1.33)
  Rarely, seldom   15(20.00)
  Sometimes   9(12.00)
  About half of the time   20(26.67)
  Almost everytime   23(30.67)
  Always   7(9.33)
Giving syringes and needles to other users to share during the past month (N = 75)   
  Frequency of sharing syringes and needs (range = 0-5)* 2.83 ± 1.31  
  Never   1(1.33)
  Rarely, seldom   16(21.33)
  Sometimes   13(17.33)
  About half of the time   16(21.33)
  Almost everytime   24(32.00)
  Always   5(6.67)
Purchasing syringes and needles during the past month (N = 75)   
  Purchasing syringes and needles (range = 0-4)* 2.15 ± 1.06  
  Never   3(4.00)
  Once   19(25.33)
  Sometimes   26(34.67)
  Often   18(24.00)
  Always   9(12.00)
Keeping syringes and needles available during the past month (N = 75)   
  Frequency of keeping syringes and needles (range = 0-4)* 2.15 ± 1.17  
  Never   4(5.33)
  Rarely   22(29.33)
  Sometimes   20(26.67)
  Often   17(22.67)
  Always   12(16.00)
Discussing or persuading peers not to share syringes and needles when injecting (N = 75)   
  Frequency of discussing or persuading peers not to share (range = 0-4)* 1.75 ± 1.17  
  Never   12(16.00)
  Rarely   22(19.33)
  Sometimes   19(25.33)
  Often   17(22.67)
  Always   5(6.67)
  1. *Higher scores indicating higher levels of the practice or higher risk behavior.