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Index of statistical tests


W Wald test used to compute the p-value

F F test used to compute the p-value

Z Z test used to compute the p-value (for differences between 2013 and 2015)

R Regression of the log of the outcome variable on time


1Difference in overall smoking prevalence between 2013 and 2015: p=0.04Z

2Difference in daily smoking prevalence between 2013 and 2015: p=0.04Z

3Difference in non-daily smoking prevalence between 2013 and 2015: p=0.70Z

4Overall effect of time (1999-2015) on smoking prevalence: p<0.0001F

5Overall annual rate of decline in prevalence, 1999-2015=3.5%; relationship of log prevalence & time: p<0.0001R

6Difference in overall smoking prevalence between males and females in 2015: p<0.0001W

7Difference in daily smoking prevalence between males and females in 2015: p=0.001W

8Difference in non-daily smoking prevalence between males and females in 2015: p<0.0001W

9Difference in current smoking prevalence among females between 2013 and 2015: p=0.004Z

10Difference in current smoking prevalence among males between 2013 and 2015: p=0.75Z

11Difference in current smoking prevalence between age groups in 2015: p<0.0001W

12Difference in consumption between 2013 and 2015: p=0.78Z

13Overall effect of time (1999-2015) on consumption: p<0.0001F

14Overall annual rate of decline in consumption, 1999-2015=1.3%; relationship of log CPD & time: p<0.0001R

15Difference in consumption between males and females in 2015: p=0.0002W

16Difference in consumption among males between 2013 and 2015: p=0.92Z

17Difference in consumption among females between 2013 and 2015: p=0.42Z

18Difference in consumption between age groups in 2015: p=0.01W

19Difference in self-rated health (excellent/very good vs. other) by smoking status in 2015: p<0.0001W

20Difference in (excellent/very good) self-rated health by smoking status, age 15-19, in 2015: p<0.0001W

21Difference in (excellent/very good) self-rated health by smoking status, age 20-24, in 2015: p<0.0001W

22Difference in (excellent/very good) self-rated health by smoking status, age 25-34, in 2015: p=0.04W

23Difference in (excellent/very good) self-rated health by smoking status, age 35-44, in 2015: p=0.01W

24Difference in (excellent/very good) self-rated health by smoking status, age 45+, in 2015: p<0.0001W

25Difference in self-rated mental health (excellent/very good vs. other) by smoking status in 2015: p<0.0001W

26Difference in (excellent/very good) self-rated mental health by smoking status, age 15-19, in 2015: p=0.048W

27Difference in (excellent/very good) self-rated mental health by smoking status, age 20-24, in 2015: p=0.02W

28Difference in (excellent/very good) self-rated mental health by smoking status, age 25-34, in 2015: p=0.006W

29Difference in (excellent/very good) self-rated mental health by smoking status, age 35-44, in 2015: p=0.03W

30Difference in (excellent/very good) self-rated mental health by smoking status, age 45+, in 2015: p=0.005W

31Difference in smoking prevalence between provinces in 2015: p<0.0001W

32Difference in consumption between provinces in 2015: p=0.001W

33Difference in cigar use between males and females in 2015: p<0.0001W

34Difference in cigarillo use between males and females in 2015: p<0.0001W

35Difference in pipe use between males and females in 2015: p=0.007W

36Difference in chewing tobacco/snuff use between males and females in 2015: p<0.0001W

37Difference in waterpipe use between males and females in 2015: p=0.04W

38Difference in cigarillo use between (4) age groups in 2015: p<0.0001W

39Difference in pipe use between (2) age groups in 2015: p=0.0006W

40Difference in chewing tobacco/snuff use between (3) age groups in 2015: p<0.0001W

41Difference in waterpipe use between (3) age groups in 2015: p<0.0001W

42Difference in cigar use between (4) age groups in 2015: p=0.07W

43Difference in cigar/cigarillo use between provinces in 2015: p=0.045W

44Difference in any SHS exposure in past month between males and females in 2015: p<0.0001W

45Difference in any SHS exposure in past month between age groups in 2015: p<0.0001W

46Difference in any SHS exposure in past month by smoking status in 2015: p<0.0001W

47Difference in quitter percentage between males and females in 2015: p=0.054W

48Difference in ever smoking between males and females in 2015: p<0.0001W

49Difference in current smoking between males and females in 2015: p<0.0001W

50Difference in quitter percentage between age groups in 2015: p<0.0001W

51Difference in 6-month quit intentions between 2013 and 2015: p=0.65Z

52Difference in 30-day quit intentions between 2013 and 2015: p=0.99Z

53Difference in 6-month quit intentions between males and females in 2015: p=0.41W

54Difference in 30-day quit intentions between males and females in 2015: p=0.43W

55Difference in 30-day quit intentions between age groups in 2015: p=0.045W

56Difference in 6-month quit intentions between age groups in 2015: p=0.28W

57Difference in having made a quit attempt in the past year between 2013 and 2015: p=0.37Z

58Difference in having made a quit attempt in the past year between males and females in 2015: p=0.07W

59Difference in having made a quit attempt in the past year between age groups in 2015: p=0.01W

60Difference in quit success (among past-year attempters) between 2013 and 2015: p=0.43Z

61Difference in quit success (among past-year attempters) between males and females in 2015: p=0.03W

62Difference in quit success (among past-year attempters) between (3) age groups in 2015: p=0.46W

63Difference in use of telephone helpline (among current smokers who had tried to quit in the past year and former smokers who had quit in the past 2 years) between 2013 and 2015: p=0.47Z

64Difference in citing health as the main reason for quitting between males and females in 2015: p=0.10W

65Difference in citing health as the main reason for quitting between (3) age groups in 2015: p=0.78W

66Difference in ever trying a cigarette between males and females in 2014-15, grades 6-9:  p=0.37W

67Difference in ever trying a cigarette between 2012-13 and 2014-15, grades 6-9: p<0.0001W

68Difference in ever trying a cigarette between provinces in 2014-15, grades 6-9: p<0.0001W

69Difference in ever smoking a whole cigarette between 2013 and 2015, age 15-19: p=0.26Z

70Difference in ever smoking a whole cigarette between males and females in 2015, age 15-19: p=0.16W

71Difference in susceptibility between 2012-13 and 2014-15, grades 6-9: p=0.94W

72Difference in susceptibility between males and females in 2014-15, grades 6-9: p=0.08W

73Difference in susceptibility between provinces in 2014-15, grades 6-9: p=0.03W

74Difference in smoking prevalence between 2012-13 and 2014-15, grades 6-9: p=0.048W

75Difference in non-daily smoking prevalence between 2012-13 and 2014-15, grades 6-9: p=0.048W

76Difference in daily smoking prevalence between 2012-13 and 2014-15, grades 6-9: p=0.07W

77Difference in smoking prevalence between 2013 and 2015, age 15-19: p=0.45Z

78Difference in daily smoking prevalence between 2013 and 2015, age 15-19: p=0.40Z

79Difference in non-daily smoking prevalence between 2013 and 2015, age 15-19: p=0.85Z

80Difference in smoking prevalence between males and females in 2014-15, grades 6-9: p=0.94W

81Difference in smoking prevalence between males and females in 2015, age 15-19: p=0.22W

82Difference in smoking prevalence between provinces in 2014-15, grades 6-9: p=0.19W

83Difference in smoking prevalence between provinces in 2015, age 15-19: p=0.17W

84Difference in consumption between 2012-13 and 2014-15, grades 7-9: p=0.53W

85Difference in consumption between 2013 and 2015, age 15-19: p=0.11Z

86Difference in consumption between males and females in 2014-15, grades 7-9: p=0.60W

87Difference in consumption between males and females in 2015, age 15-19: p=0.15W

88Difference in cigar/cigarillo use between 2013 and 2015, age 15-19: p=0.29Z

89Difference in chewing tobacco/snuff use between 2013 and 2015, age 15-19: p=0.61Z

90Difference in cigar/cigarillo use between 2012-13 and 2014-15, grades 6-9: p=0.055W

91Difference in smokeless tobacco use between 2012-13 and 2014-15, grades 6-9: p=0.91W

92Difference in cigar use between males and females in 2015, age 15-19: p<0.0001W

93Difference in cigarillo use between males and females in 2015, age 15-19: p=0.0001W

94Difference in chewing tobacco/snuff use between males and females in 2015, age 15-19: p<0.0001W

95Difference in waterpipe use between males and females in 2015, age 15-19: p=0.24W

96Difference in cigar use between males and females in 2014-15, grades 6-9: p=0.007W

97Difference in smokeless tobacco use between males and females in 2014-15, grades 6-9: p<0.0001W

98Difference in cigarillo use between males and females in 2014-15, grades 6-9: p=0.06W

99Difference in waterpipe use between males and females in 2014-15, grades 6-9: p=0.11W

100Difference in cigar use between provinces in 2014-15, grades 6-9: p=0.01W

101Difference in cigarillo use between provinces in 2014-15, grades 6-9: p<0.0001W

102Difference in smokeless tobacco use between provinces in 2014-15, grades 6-9: p<0.0001W

103Difference in waterpipe use between provinces in 2014-15, grades 6-9: p=0.001W

104Difference in cigar use between provinces in 2015, age 15-19: p=0.04W

105Difference in cigarillo use between provinces in 2015, age 15-19: p=0.006W

106Difference in chewing tobacco/snuff use between provinces in 2015, age 15-19: p=0.005W

107Difference in waterpipe use between provinces in 2015, age 15-19: p=0.56W

108Difference in ever having made a quit attempt between 2012-13 and 2014-15, grade 6-9 smokers: p=0.85W

109Difference in having made a quit attempt in the past 12 months between 2013 and 2015, smokers age 15-19: p=0.24Z

110Difference in prevalence of ever e-cigarette use between 2013 and 2015: p<0.0001Z

111Difference in prevalence of past 30-day e-cigarette use between 2013 and 2015: p<0.0001Z

112Difference in prevalence of ever e-cigarette use between males and females in 2015: p<0.0001W

113Difference in prevalence of past 30-day e-cigarette use between males and females in 2015: p=0.13W

114Difference in prevalence of daily e-cigarette use between males and females in 2015: p=0.03W

115Difference in prevalence of past 30-day e-cigarette use among ever users, between males and females in 2015: p=0.24W

116Difference in prevalence of daily e-cigarette use among past 30-day users, between males and females in 2015: p=0.10W

117Difference in prevalence of ever e-cigarette use between age groups in 2015: p<0.0001W

118Difference in prevalence of ever e-cigarette use between 2013 and 2015, age 15-19: p=0.002Z

119Difference in prevalence of ever e-cigarette use between 2013 and 2015, age 20-24: p<0.0001Z

120Difference in prevalence of ever e-cigarette use between 2013 and 2015, age 25-34: p=0.02Z

121Difference in prevalence of ever e-cigarette use between 2013 and 2015, age 35-44: p=0.06Z

122Difference in prevalence of ever e-cigarette use between 2013 and 2015, age 45+: p<0.0001Z

123Difference in prevalence of past 30-day e-cigarette use between age groups in 2015: p<0.0001W

124Difference in prevalence of past 30-day e-cigarette use between 2013 and 2015, age 15-19: p<0.0001Z

125Difference in prevalence of past 30-day e-cigarette use between 2013 and 2015, age 20-24: p=0.01Z

126Difference in prevalence of past 30-day e-cigarette use between 2013 and 2015, age 25-44: p=0.13Z

127Difference in prevalence of past 30-day e-cigarette use between 2013 and 2015, age 45+: p=0.006Z

128Difference in prevalence of past 30-day e-cigarette use among ever-users, between age groups in 2015: p=0.49W

129Difference in prevalence of daily e-cigarette use between age groups in 2015: p=0.60W

130Difference in prevalence of daily e-cigarette use among past 30-day users, between age groups in 2015: p=0.04W

131Difference in prevalence of ever e-cigarette use between males and females in 2015, age 15-19: p<0.0001W

132Difference in prevalence of ever e-cigarette use between males and females in 2015, age 20-24: p=0.0004W

133Difference in prevalence of ever e-cigarette use between males and females in 2015, age 25-34: p=0.0004W

134Difference in prevalence of ever e-cigarette use between males and females in 2015, age 35-44: p=0.35W

135Difference in prevalence of ever e-cigarette use between males and females in 2015, age 45+: p=0.21W

136Difference in prevalence of past 30-day e-cigarette use between males and females in 2015, age 15-19: p=0.009W

137Difference in prevalence of past 30-day e-cigarette use between males and females in 2015, age 20-24: p=0.007W

138Difference in prevalence of past 30-day e-cigarette use between males and females in 2015, age 25-44: p=0.98W

139Difference in prevalence of past 30-day e-cigarette use between males and females in 2015, age 45+: p=0.84W

140Difference in prevalence of ever e-cigarette use between provinces in 2015: p<0.0001W

141Difference in prevalence of past 30-day e-cigarette use between provinces in 2015: p=0.009W

142Difference in prevalence of ever e-cigarette use between provinces in 2015, age 15-19: p=0.25W

143Difference in prevalence of ever e-cigarette use by smoking status in 2015: p<0.0001W

144Difference in prevalence of past 30-day e-cigarette use by smoking status in 2015: p<0.0001W

145Difference in prevalence of ever e-cigarette use between male and female smokers in 2015: p=0.98W

146Difference in prevalence of past 30-day e-cigarette use between male and female smokers in 2015: p=0.64W

147Difference in prevalence of ever e-cigarette use between male and female non-smokers in 2015: p<0.0001W

148Difference in prevalence of past 30-day e-cigarette use between male and female non-smokers in 2015: p=0.46W

149Difference in prevalence of ever e-cigarette use between age groups, among smokers in 2015: p<0.0001W

150Difference in prevalence of ever e-cigarette use between age groups, among non-smokers in 2015: p<0.0001W

151Difference in prevalence of past 30-day e-cigarette use between age groups, among smokers in 2015: p<0.0001W

152Difference in prevalence of past 30-day e-cigarette use between age groups, among non-smokers in 2015: p=0.003W

153Difference in smoking prevalence between males and females, among ever e-cigarette users in 2015: p=0.79W

154Difference in smoking prevalence between males and females, among past 30-day e-cigarette users in 2015: p=0.64W

155Difference in smoking prevalence between age groups, among ever e-cigarette users in 2015: p<0.0001W

156Difference in smoking prevalence between age groups, among past 30-day e-cigarette users in 2015: p=0.40W

157Difference in percentage of ever e-cigarette users who reported that their last e-cigarette contained nicotine between 2013 and 2015: p<0.0001Z

158Difference in percentage of ever e-cigarette users who reported that their last e-cigarette contained nicotine, by smoking status: p<0.0001W

159Difference in percentage of ever e-cigarette users who reported that their last e-cigarette contained nicotine between male and female smokers in 2015: p=0.14W

160Difference in percentage of ever e-cigarette users who reported that their last e-cigarette contained nicotine between male and female non-smokers in 2015: p=0.54W

161Difference in percentage of ever e-cigarette users (who either quit smoking in the past year or were current smokers that had ever tried to quit) who reported that they used e-cigarettes as a cessation aid, between males and females in 2015: p=0.94W

162Difference in percentage of ever e-cigarette users (who either quit smoking in the past year or were current smokers that had ever tried to quit) who reported that they used e-cigarettes as a cessation aid, between age groups in 2015: p=0.52W

163Difference in percentage of smokers who intended to quit in the next 6 months, between past 30-day e-cigarette users vs. non-users in 2015: p=0.007W

164Difference in percentage of smokers who intended to quit in the next 30 days, between past 30-day e-cigarette users vs. non-users in 2015: p=0.76W

165Difference in percentage of ever e-cigarette users who were current smokers who reported using e-cigarettes when unable to smoke or to smoke fewer cigarettes between males and females in 2015: p=0.22W

166Difference in percentage of ever e-cigarette users who were current smokers who reported using e-cigarettes when unable to smoke or to smoke fewer cigarettes between age groups in 2015: p=0.61W

167Difference in prevalence of ever e-cigarette use between grades in 2014-15, grades 6-9: p<0.0001W

168Difference in prevalence of past 30-day e-cigarette use between grades in 2014-15, grades 6-9: p<0.0001W

169Difference in prevalence of ever e-cigarette use between males and females in 2014-15, grades 6-9: p=0.0004W

170Difference in prevalence of past 30-day e-cigarette use between males and females in 2014-15, grades 6-9: p=0.0009W

171Difference in prevalence of ever e-cigarette use between provinces in 2014-15, grades 6-9: p<0.0001W

172Difference in prevalence of past 30-day e-cigarette use between provinces in 2014-15, grades 6-9: p<0.0001W

173Difference in prevalence of ever e-cigarette use by smoking status in 2014-15, grades 6-9: p<0.0001W

174Difference in prevalence of past 30-day e-cigarette use by smoking status in 2014-15, grades 6-9: p<0.0001W

175Difference in percentage who perceived “easy” or “very easy” access to e-cigarettes between ever e-cigarette users vs. non-users in 2014-15, grades 6-9: p<0.0001W

176Difference in percentage who perceived “no risk” of using e-cigarettes once in a while between ever e-cigarette users vs. non-users in 2014-15, grades 6-9: p<0.0001W

177Difference in percentage who perceived “no risk” of using e-cigarettes on a regular basis between ever e-cigarette users vs. non-users in 2014-15, grades 6-9: p<0.0001