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Table 2 Underreporting of non-study cigarette use by study group at weeks 2 and 6

From: Underreporting of non-study cigarette use by study participants confounds the interpretation of results from ambulatory clinical trial of reduced nicotine cigarettes

 

Investigational Cigarettes (mg/g nominal nicotine content)

Group

15.8

5.2

2.3

1.3

0.4

0.4 high tar

Week 2

Self-reported mean

non-study CPD (SD)

0.51 (1.586)

1.26 (2.508)

1.94 (3.876)

2.22 (4.601)

2.01 (3.895)

2.05

(4.340)

Estimated mean

non-study CPD (SD)

NA

10.85 (25.211)

10.71 (11.073)

13.51 (14.255)

16.51 (21.986)

11.98 (13.471)

Underreported

non-study CPD

9.59

8.77

11.29

14.50

9.93

Underreporting (%)

88

81.9

83.6

87.8

82.9

Week 6

Self-reported mean

non-study CPD (SD)

0.41 (1.198)

0.92 (2.466)

1.81 (3.967)

1.63 (4.164)

1.35 (3.454)

1.94

(5.046)

Estimated mean

non-study CPD (SD)

NA

10.04 (9.053)

12.72 (12.005)

15.36 (14.247)

15.10 (13.874)

13.15 (12.294)

Underreported

non-study CPD

 

9.12

10.91

13.73

13.75

11.21

Underreporting (%)

90.8

85.8

89.4

91.1

85.2

  1. NA, not applicable, the 15.8 mg/g CNC group was used as reference