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Table 2 Summary of linear regression results for final test day

From: Effects of first exposure to plain cigarette packaging on smoking behaviour and attitudes: a randomised controlled study

    Unadjusted Adjusted
  Branded (n= 63) Mean (SE) Plain (n= 64) Mean (SE) B Lower Upper P B Lower Upper P
Primary outcomes
Number of Cigarettes Smoked 10.86 (0.45) 10.34 (0.48) −0.51 −1.81 +0.78 0.435 −0.58 −1.63 +0.48 0.279
Volume (mL) of Smoke Inhaled 765.15 (62.41) 817.26 (55.24) +52.10 −112.70 +216.91 0.533 +54.78 −112.50 +222.07 0.518
Secondary Outcomes
Quitting Contemplation Ladder 4.35 (0.15) 4.28 (0.12) −0.07 −0.44 +0.31 0.719 −0.09 −0.31 +0.13 0.432
Taste Test 3.22 (0.10) 3.51 (0.12) +0.29 −0.02 +0.59 0.068 +0.20 −0.08 +0.48 0.154
Experience of smoking 3.77 (0.09) 3.57 (0.10) −0.20 −0.47 +0.07 0.140 −0.18 −0.45 +0.09 0.183
Experience of using the pack 4.63 (0.07) 4.13 (0.13) −0.50 −0.80 −0.21 0.001 −0.52 −0.82 −0.22 0.001
Rating of pack attributes 3.52 (0.08) 1.91 (0.07) −1.61 −1.82 −1.40 < 0.001 −1.59 −1.80 −1.39 < 0.001
Rating of the health warning 3.92 (0.11) 4.41 (0.08) +0.49 +0.23 +0.76 < 0.001 +0.51 +0.24 +0.78 < 0.001
Change in behaviour 2.06 (0.21) 2.20 (0.20) +0.14 −0.43 +0.71 0.629 +0.11 −0.45 +0.68 0.695
Attitudes to plain packs 6.66 (0.30) 6.21 (0.05) −0.45 −1.27 +0.38 0.285 −0.39 −1.22 +0.44 0.350