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. 2016 Mar 22;22(1):763. doi: 10.4102/sajpsychiatry.v22i1.763

TABLE 2.

Alcohol and tobacco user overlap.

Variable Total sample Age: 18–34 Age: 35–60 Statistic




N % N % N % P-value
Moderate or high-risk alcohol users 977 44.2 513 48.9 464 40.0 < 0.001
Moderate or high-risk tobacco users 1233 55.8 652 62.2 581 50.1 < 0.001
Proportion of moderate or high-risk tobacco users among moderate or high-risk alcohol users 762 78.0 418 81.5 344 74.1 0.006
Proportion of moderate or high-risk alcohol users among moderate or high-risk tobacco users 762 61.8 418 64.1 344 59.2 0.077
Moderate or high-risk alcohol users or moderate or high-risk tobacco users 686 31.1 329 31.4 357 30.8 0.776
Moderate or high-risk alcohol users and moderate or high-risk tobacco users 762 34.5 418 39.8 344 29.7 < 0.001

Source: Author’s own work.