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Table 2 Classification of dependence according to the Heaviness of Smoking Index (HSI score)

From: Exploratory survey study of long-term users of nicotine replacement therapy in Danish consumers

 

A = 3 points (0–5 min)

B = 2 points (6–30 min)

C = 1 point (31–60 min)

D = 0 points (later)

A = 0 points (≤10)

4

8

6b

8b

B = 1 point (11–20)

15

10

9

3b

C = 2 points (21–30)

4a

5

-

-

D = 3 points (31 ≤)

2a

1a

-

-

  1. The classification of dependence includes respondents using only acute-acting single-dose NRT. Patch, e-cigarette and inhaler users were omitted (n = 75). The time intervals in the columns indicate time to first NRT after waking. The intervals given in the rows indicate number of NRT doses per day.
  2. aHighly nicotine dependent respondents (score 5–6) = 9.3% (N = 7).
  3. bRespondents found low dependent on nicotine (score 0–1) = 22.7% (N = 17). Respondents moderately dependent on nicotine (score 2–4) = 68.0% (N = 51).