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. Author manuscript; available in PMC: 2010 May 26.
Published in final edited form as: J Abnorm Psychol. 2008 Nov;117(4):896–909. doi: 10.1037/a0013296

Table 4.

Mean Indicator Values for Taxon and Nontaxon Members Using the 2003 National Survey on Drug Use and Health

M (SD)
Indicator Taxon (N = 5,947) Nontaxon (N = 6,520)
Latency to first cigarette: On the days that you smoke, how soon after you wake up
 do you have your first cigarette? (with point values)		 3.08 (0.83) 1.51 (0.83)
 Within the first 5 minutes (4)
 Between 6 and 30 minutes (3)
 Between 31 and 60 minutes (2)
 More than 60 minutes (1)
Average no. cigarettes: On the days you smoked cigarettes during the past 30 days,
  how many cigarettes did you smoke per day, on average? (with point values)		 4.72 (0.96) 2.88 (1.07
 1 cigarette per day (2)
 2 to 5 cigarettes per day (3)
 6 to 15 cigarettes per day (about one-half pack) (4)
 16 to 25 cigarettes per day (about one pack) (5)
 26 to 35 cigarettes per day (about one-and-a-half packs) (6)
 More than 35 cigarettes per day (about two packs or more) (7)
NDSS drivea 3.61 (0.81) 2.03 (0.79)

  1.  After not smoking for a while, you need to smoke in order to feel less restless and irritable.

  2.  When you don’t smoke for a few hours, you start to crave cigarettes.

  3.  You sometimes have strong cravings for a cigarette where it feels like you’re In  the grip of a force you can’t control.

  4.  You feel a sense of control over your smoking that is, you can “take it or leave  it” at any time (reversed scored).
NDSS continuitya 3.68 (0.87) 1.94 (0.9)

  1.  You smoke cigarettes fairly regularly throughout the day.

  2.  You smoke about the same amount on weekends as on weekdays.

  3.  You smoke just about the same number of cigarettes from day to day.
NDSS tolerancea 3.06 (1.11) 1.60 (0.75)

  1.  Since you started smoking, the amount you smoke has increased.

  2.  Compared to when you first started smoking, you need to smoke a lot more now in order to be satisfied.

  3.  Compared to when you first started smoking, you can smoke much, much more now before you start to feel anything.

Note. NDSS = Nicotine Dependence Symptom Scale.

a

NDSS item response options and point values: not at all true (1), somewhat true (2), moderately true (3), very true (4), and extremely true (5).