Table 2

Alcohol (g/day) intake of the participants of the ‘Bus Santé’ study, Geneva, Switzerland, according to study period,* stratified by participants' characteristics

Period 1Period 2Period 3Period 4Period 5Period 6p Value
MedianIQRMedianIQRMedianIQRMedianIQRMedianIQRMedianIQR
Sample size (N)64031550409492019284068
All participants7.11.8–19.26.61.8–17.566.61.2–18.25.91.2–15.75.71.3–14.75.41.2–13.4<0.001
Men13.24.2–26.612.04.2–24.211.53.8–25.09.22.9–22.39.83.0–20.58.73.0–17.8<0.001
Women3.60.7–11.53.50.7–11.83.10.5–10.73.00.2–9.53.20.6–8.62.80.5–7.60.005
Marital status
 Single6.61.7–15.46.61.4–16.56.61.9–16.56.52.4–13.16.51.7–13.34.81.2–11.80.173
 Married/cohabitating7.31.8–19.86.81.9–17.66.61.3–19.26.11.2–16.76.11.4–15.05.41.2–13.8<0.001
 Divorced7.11.7–19.87.21.8–19.76.61.2–15.44.71.0–14.74.21.2–14.84.20.5–13.20.007
 Widowed4.81.2–14.84.71.2–13.73.30.5–16.22–81.2–13.24.90–17.82.80.1–13.20.519
Education
 University7.12.4–17.86.81.9–16.06.61.7–17.56.71.7–14.55.71.7–14.35.61.7–13.20.018
 Lower than university7.11.7–19.86.61.8–18.06.61.2–19.35.01.2–17.15.71.2–15.54.81.0–13.5<0.001
Smoking status
 Never smoked4.71.2–13.54.21.2–13.23.60.5–13.24.10.5–13.04.11.0–12.74.00.6–10.50.163
 Former smoker10.32.8–23.810.12.8–19.89.92.9–23.37.32.0–19.87.12.8–17.17.22.4–17.3<0.001
 Current smoker9.82.8–21.29.92.8–20.58.92.8–21.09.12.8–20.07.12.8–17.26.61.8–15.5<0.001
Country of birth
 Switzerland6.81.8–17.66.61.8–16.16.61.7–17.65.41.4–14.46.51.8–14.55.71.7–13.40.004
 Other8.21.7–21.17.41.9–19.86.61.2–19.86.71.0–18.24.30.7–15.44.20.5–13.2<0.001
  • *Figure 1 provides details on the dates of each period. Results are expressed as weighted median and IQR.