Cochran-Armitage trend test | |||||||
---|---|---|---|---|---|---|---|
Indicators | 1998 %* (number†) | 1999 % (number) | 2000 % (number) | 2001 % (number) | 2002 % (number) | Z Statistic | p Value |
*Sample weights were used to adjust the proportions. | |||||||
†Weighted sample size. Numbers rounded to the nearest integer. | |||||||
No smoking patrons | 45.7 (74/162) | 55.9 (85/152) | 67.0 (169/253) | 67.3 (201/298) | 75.8 (386/510) | 7.44 | 0.0001 |
No smoking employees | 86.2 (131/152) | 92.0 (138/150) | 89.5 (225/252) | 94.1 (280/298) | 94.7 (481/508) | 3.60 | 0.0003 |
Ashtrays | 63.6(98/154) | 52.0 (79/152) | 40.5 (102/252) | 38.5 (114/296) | 30.5 (155/508) | −7.82 | 0.0001 |
Outdoor smoking area | 33.3 (50/150) | 29.1 (44/151) | 37.7 (95/252) | 45.0 (134/298) | 44.4 (225/508) | 3.75 | 0.0002 |