Table 1 Mean ± SD Subject Characteristics and Smoking History

From: Smoking History and Nicotine Effects on Cognitive Performance

 

Smokers (n = 14)

Ex-Smokers (n = 15)

Never-Smokers (n = 9)

Gender (female/male)

8/6

5/10

6/3

Socioeconomic statusa

66.2 ± 30.1

60.4 ± 26.8

59.9 ± 20.1

Estimated IQb

107.6 ± 11.9

102.5 ± 10.3

105.9 ± 11.0

SCL-90c

43.6 ± 9.9

43.8 ± 12.6

41.0 ± 9.6

Age first smoked

15.7 ± 2.7

15.6 ± 3.3

NAd

Peak # cigarettes/day

27.4 ± 9.4

6.6 ± 13.3

NA

Current # cigarettes/day

25.4 ± 7.6

0

NA

Years smoking

14.6 ± 7.6

6.5 ± 9.6

NA

Years abstinent

0

7.3 ± 7.2

NA

Fagerström scoree

6.8 ± 1.3

0

NA

  1. aHollingshead Rating Scale.
  2. bShipley Institute of Living Scale.
  3. cSymptom Checklist-90.
  4. dNot applicable.
  5. eFagerstro¨m Test for Nicotine Dependence.
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