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Legislation for smoke-free workplaces and health of bar workers in Ireland: before and after study

BMJ 2005; 331 doi: https://doi.org/10.1136/bmj.38636.499225.55 (Published 10 November 2005) Cite this as: BMJ 2005;331:1117

Data supplement

  • There was an inconsistency between the model coefficients for cotinine in table 5 and the adjusted cotinine concentrations reported in table 6. This is because the data in table 6 had been converted to SI units but the coefficients had not been changed in table 5. The correct coefficients are shown in this revised table. The authors state that they do not affect the conclusions of the paper.

    Revised Table 5 Modelled changes in non-smokers. Figures are regression coefficients (95% confidence intervals) for cotinine concentrations and rate ratios (95% confidence intervals) for respiratory and sensory symptoms

     

     

    Regression coefficient or rate ratio (95% CI)

    P value

    Cotinine concentrations (nmol/l) (n=131)

    Region (Republic: N Ireland)

    0.12 (-8.9 to 9.2)

    0.978

    Time period (follow-up: baseline)

    -11.3 (-20.6 to -2.0)

    0.017

    Live with smoker (yes: no)

    9.2 (3.5 to 14.9)

    0.002

    Hours worked in past 2 days

    0.41 (0.09 to 0.74)

    0.011

    Age (years)

    -0.20 (-0.40 to 0.00)

    0.053

    Sex (female: male)

    5.3 (-1.6 to 12.2)

    0.134

    Interaction between region and time period

    -13.6 (-23.7 to -3.5)

    0.008

    Constant

    35.1 (24.1 to 46.1)

    <0.001

    Respiratory symptoms (n=158)

    Region (Republic: N Ireland)

    1.96 (1.11 to 3.48)

    0.021

    Time period (follow-up: baseline)

    1.22 (0.72 to 2.08)

    0.447

    Age (years)

    1.00 (0.99 to 1.01)

    0.487

    Sex (female: male)

    0.44 (0.28 to 0.69)

    <0.001

    Interaction between region and time period

    0.60 (0.35 to 1.04)

    0.070

    Sensory symptoms (n=158)

    Region (Republic: N Ireland)

    1.14 (0.77 to 1.70)

    0.507

    Time period (follow-up: baseline)

    0.57 (0 .47 to 0.71)

    <0.001

    Age (years)

    0.99 (0.98 to 1.00)

    0.063

    Sex (female: male)

    0.86 (0.60 to 1.22)

    0.398

    Hours worked in past week

    0.99 (0.98 to 1.00)

    0.089

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