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Table 5 Agreement with goals of a supervised smoking facility by level of awarenessa

From: Public opinions about supervised smoking facilities for crack cocaine and other stimulants

   Aware of supervised smoking facilities
Goal of facility No (95 % CI) Yes (95 % Cl) Difference (95 % CI) p-value (difference) p-value (distribution) Degrees of freedom
Composite measure
 Strongly agree 16.8 % (13.6 % to 20.6 %) 28.4 % (21.0 % to 37.3 %) 11.6 % (2.7 % to 20.5 %) 0.011   Difference: 829 Distribution: F(1.99, 1652.12) = 4.0000
 Somewhat agree/disagree 66.7 % (62.3 % to 70.8 %) 55.1 % (45.4 % to 64.4 %) -11.6 % (-22.1 % to -1.1 %) 0.030  
 Strongly disagree 16.5 % (13.5 % to 20.0 %) 16.5 % (10.5 % to 25.0 %) 0.0 % (-7.9 % to 7.9 %) 0.995 0.019
Supervised smoking facilities should be made available to people who smoke drugs like crack cocaine and methamphetamine to encourage safer drug use
 Strongly agree 17.3 % (14.2 % to 21.0 %) 30.2 % (22.7 % to 38.9 %) 12.8 % (4.0 % to 21.6 %) 0.005   Difference: 889 Distribution: F(1.97, 1752.21) = 5.3906
 Somewhat agree/disagree 41.2 % (37.0 % to 45.6 %) 40.3 % (31.0 % to 50.3 %) -0.9 % (-11.6 % to 9.8 %) 0.863  
 Strongly disagree 41.4 % (37.2 % to 45.7 %) 29.6 % (22.0 % to 38.5 %) -11.9 % (-21.2 % to -2.5 %) 0.013 0.005
Supervised smoking facilities should be made available if it can be shown that they reduce infectious disease among people who smoke drugs like crack cocaine and methamphetamine
 Strongly agree 31.8 % (27.8 % to 36.0 %) 46.7 % (37.4 % to 56.3 %) 14.9 % (4.5 % to 25.3 %) 0.005   Difference: 910 Distribution: F(1.98, 1802.95) = 4.4720
 Somewhat agree/disagree 42.3 % (38.1 % to 46.6 %) 30.5 % (22.0 % to 40.5 %) -11.8 % (-22.1 % to -1.6 %) 0.023  
 Strongly disagree 25.9 % (22.4 % to 29.7 %) 22.8 % (16.0 % to 31.4 %) -3.1 % (-11.6 % to 5.4 %) 0.478 0.012
Supervised smoking facilities should be made available if they can increase drug users’ contact with health and social workers
 Strongly agree 37.7 % (33.6 % to 42.0 %) 48.8 % (39.3 % to 58.4 %) 11.1 % (0.6 % to 21.6 %) 0.039   Difference: 919 Distribution: F(1.98, 1823.00) = 2.2802
 Somewhat agree/disagree 42.1 % (37.9 % to 46.3 %) 33.1 % (24.3 % to 43.3 %) -9.0 % (-19.5 % to 1.5 %) 0.093  
 Strongly disagree 20.2 % (17.1 % to 23.8 %) 18.1 % (12.0 % to 26.4 %) -2.1 % (-10.0 % to 5.8 %) 0.599 0.103
Supervised smoking facilities should be made available if it can be shown that they reduce neighbourhood problems related to use of drugs like crack cocaine and methamphetamine
 Strongly agree 44.0 % (39.8 % to 48.2 %) 50.7 % (41.1 % to 60.2 %) 6.7 % (-3.8 % to 17.2 %) 0.213   Difference: 934 Distribution: F(1.97, 1844.31) = 1.1145
 Somewhat agree/disagree 38.3 % (34.3 % to 42.4 %) 30.7 % (22.0 % to 40.9 %) -7.6 % (-18.0 % to 2.8 %) 0.151  
 Strongly disagree 17.8 % (14.9 % to 21.1 %) 18.7 % (12.5 % to 26.9 %) 0.9 % (-6.9 % to 8.8 %) 0.821 0.328
  1. aCI denotes confidence interval. Proportions estimated using complex survey designs. Differences calculated using t-distribution for differences with specified degrees of freedom. Test statistic for distribution uses Pearson’s chi-square test converted to an F-statistic for the survey design with the second-order correction of Rao and Scott with specified degrees of freedom [46]