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Table 2 Distribution of male smokers by age of smoking initiation and number of cigarettes smoked per day

From: Epidemiology of smoking among Malaysian adult males: prevalence and associated factors

  n (%) Estimated population 95% CI
Age started smoking (years)    
 4–6 12(0.1) 4175 0.1–0.3
 7–9 51(0.6) 18002 0.5–0.8
 10–12 448(5.8) 164112 5.3–6.4
 13–15 1501(19.7) 552322 18.8–20.6
 16–18 2558(33.8) 949289 32.7–34.9
 19–21 1869(24.3) 683068 23.3–25.3
 22–24 442(5.8) 161312 5.3–6.3
 25 and above 762(9.9) 276913 9.2–10.6
No. of cigarettes smoked per day    
 1–5 1835(24.2) 661943 23.2–25.3
 6–10 2338(31.3) 855871 30.3–32.4
 11–15 1423(19.4) 530519 18.5–20.4
 16–20 1420(19.4) 529399 18.4–20.4
 21 and more 415(5.6) 154046 5.1–6.2