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. 2022 Apr 21;47:101401. doi: 10.1016/j.eclinm.2022.101401

Table 2.

Sample distribution and prevalence of current e-cigarette use among adults aged ≥ 15 years in 14 countries, by demographic characteristics, 2015-2018.

Bangladesh (2017)
China (2018)
Costa Rica (2015)
Ethiopia (2016)
India (2016-17)
Mexico (2015)
Philippines (2015)
Characteristics n (%)* Prevalence% (95% CI) n (%)* Prevalence% (95% CI) n (%)* Prevalence% (95% CI) n (%)* Prevalence % (95% CI) n (%)* Prevalence% (95% CI) n (%)* Prevalence% (95% CI) n (%)* Prevalence% (95% CI)
Sex
 Men 6,076 (48.6) 0.5 (0.3-0.8) (ref) 9,101 (50.7) 1.6 (1.2-2.1) (ref) 3,541 (50.2) 1.6 (1.1-2.3) (ref) 4,625 (49.9) 0.1 (0.03-0.3) (ref) 33,760 (51.1) 0.03 (0.02-0.06) (ref) 5,911 (47.9) 1.1 (0.7-1.6) (ref) 5,764 (49.9) 1.3 (1.0-1.9) (ref)
 Women 6,702 (51.4) 10,259 (49.3) 0.1 (0.1-0.4)§ 5,062 (49.8) 0.9 (0.6-1.5) 5,522 (50.1) 0.04 (0.01-0.3) 40,244 (48.9) 0.01 (0.002-0.02)§ 8,747 (52.1) 0.2 (0.1-0.4)§ 5,848 (50.1) 0.2 (0.1-0.4)§
Age (years)
 15-24 2,345 (28.1) 0.2 (0.1-0.5) (ref) 930 (13.9) 1.5 (0.8-2.8) (ref) 1,376 (23.3) 2.5 (1.6-3.9) (ref) 2,750 (45.3) 0.1 (0.02-0.2) (ref) 13,321 (26.8) 0.02 (0.01-0.07) (ref) 2,645 (25.0) 1.6 (1.0-2.5) (ref) 2,331 (29.4) 0.6 (0.3-1.2) (ref)
 25-44 6,394 (44.1) 0.4 (0.2-0.8) 5,121 (37.8) 1.2 (0.8-1.7) 3,048 (40.9) 1.1 (0.8-1.6)§ 5,338 (36.1) 0.1 (0.01-0.3) 35,553 (41.3) 0.02 (0.01-0.05) 5,988 (40.2) 0.5 (0.3-0.8)§ 4,952 (41.7) 1.0 (0.7-1.4)
 ≥45 4,039 (27.8) 0.02 (0.01-0.08) 13,309 (48.3) 0.5 (0.3-0.7) 4,179 (35.8) 0.6 (0.4-1.1)§ 2,059 (18.6) 0.1 (0.01-0.6) 25,130 (31.9) 0.01 (0.005-0.04) 6,025 (34.9) 0.2 (0.1-0.5)§ 4,329 (28.9) 0.6 (0.3-1.0)
Residential area
 Urban 6,352 (25.1) 0.8 (0.4-1.5) (ref) 11,010 (59.8) 1.1 (0.8-1.5) (ref) 4,255 (74) 1.5 (1.1-2.1) (ref) 5,062 (24.1) 0.2 (0.1-0.6) (ref) 26,481 (34.5) 0.05 (0.03-0.09) (ref) 7,571 (78.7) 0.8 (0.5-1.1) (ref) 4,610 (46.7) 1.3 (0.9-1.9) (ref)
 Rural 6,426 (74.9) 0.04 (0.02-0.10)§ 8,350 (40.2) 0.5 (0.3-0.8) 4,348 (26) 0.6 (0.3-0.9)§ 5,085 (75.9) 0.02 (0.003-0.2) 47,523 (65.5) 0.01 (0.002-0.02)§ 7,087 (21.3) 0.2 (0.1-0.4)§ 7,002 (53.3) 0.2 (0.1-0.4)§
Education Level
 No or primary 9,916 (78.3) 0.1 (0-0.2) (ref) 8,622 (33.9) 0.2 (0.1-0.4) (ref) 6,260 (65.7) 1.3 (0.9-1.7) (ref) 6,961 (72.7) 0.1 (0.01-0.2) (ref) 46,925 (63.8) 0.01 (0.002-0.02) (ref) 11,175 (68.1) 0.5 (0.3-0.8) (ref) 3,692 (26.1) 0.3 (0.2-0.7) (ref)
 Secondary or higher 2,862 (21.7) 0.8 (0.4-1.6)§ 10,717 (66.1) 1.2 (1.0-1.6)§ 2,306 (34.3) 1.4 (0.9-2.1) 3,167 (27.3) 0.1 (0.03-0.4) 27,020 (36.2) 0.05 (0.02-0.08)§ 3,416 (31.9) 0.9 (0.6-1.4) 7,918 (73.9) 0.9 (0.7-1.3)
Wealth Index quintile
 Lowest, low, or middile 7,669 (61.7) 0.06 (0.02-0.18) (ref) 12,303 (58.2) 0.5 (0.4-0.8) (ref) 5,190 (49.5) 0.9 (0.6-1.4) (ref) 6,239 (78.1) 0.05 (0.01-0.2) (ref) 45,483 (66.6) 0.01 (0.004-0.03) (ref) 8,795 (45.7) 0.3 (0.1-0.5) (ref) 6,976 (52.7) 0.3 (0.2-0.4) (ref)
 High or highest 5,109 (38.3) 0.5 (0.3-0.9) 7,057 (41.8) 1.4 (1.0-1.9)§ 3,413 (50.5) 1.6 (1.1-2.4) 3,908 (21.9) 0.1 (0.04-0.5) 28,521 (33.4) 0.04 (0.02-0.07) 5,863 (54.3) 1.0 (0.7-1.4)§ 4,636 (47.3) 1.3 (0.9-1.9)§
Romania (2018)
Russia (2016)
Senegal (2015)
Turkey (2016)
Ukraine (2017)
Uruguay (2017)
Vietnam (2015)
Characteristics n (%)* Prevalence % (95% CI) n (%)* Prevalence % (95% CI) n (%)* Prevalence % (95% CI) n (%)* Prevalence % (95% CI) n (%)* Prevalence % (95% CI) n (%)* Prevalence % (95% CI) n (%)* Prevalence % (95% CI)
Sex
 Men 2,097 (48.4) 5.0 (3.9-6.4) (ref) 4,783 (45.3) 5.4 (4.5-6.5) (ref) 1,960 (48.5) 0.2 (0.03-0.9) (ref) 4,419 (49.8) 2.1 (1.7-2.7) (ref) 3,763 (45.4) 2.5 (1.8-3.4) (ref) 2,186 (47.6) 0.3 (0.1-0.7) (ref) 3,983 (48.5) 0.4 (0.2-0.7) (ref)
 Women 2,451 (51.6) 1.8 (1.2-2.8)§ 6,665 (54.7) 1.9 (1.5-2.5)§ 2,382 (51.5) 0.05 (0.01-0.3) 4,311 (50.2) 0.6 (0.3-1.0)§ 4,529 (54.6) 1.0 (0.6-1.5)§ 2,773 (52.4) 0.2 (0.1-0.4) 5,011 (51.5) 0.1 (0.02-0.4)
Age (years)
 15-24 340 (11.7) 3.9 (2.3-6.7) (ref) 949 (12.5) 9.7 (7.5-12.5) (ref) 1,187 (33.9) 0.2 (0.04-1.3) (ref) 1,433 (21.3) 1.7 (1.1-2.6) (ref) 537 (11.7) 4.2 (2.7-6.5) (ref) 549 (19.9) 0.5 (0.1-1.6) (ref) 1,147 (23) 0.1 (0.02-0.9) (ref)
 25-44 1,271 (38.2) 6.3 (4.7-8.3) 3,968 (37.8) 4.6 (3.9-5.5)§ 1,944 (41.6) 0.1 (0.01-0.4) 4,196 (40.5) 2.0 (1.5-2.5) 2,348 (37.3) 2.4 (1.7-3.3) 1,638 (34) 0.2 (0.1-0.5) 3,497 (41.9) 0.3 (0.1-0.6)
 ≥45 2,937 (50.1) 1.0 (0.7-1.6)§ 6,531 (49.6) 1.1 (0.8-1.5)§ 1,211 (24.5) 3,101 (38.2) 0.5 (0.3-0.8)§ 5,407 (51.0) 0.6 (0.4-0.9)§ 2,772 (46.1) 0.1 (0.05-0.4) 4,350 (35.1) 0.2 (0.1-0.6)
Residential area
 Urban 2,301 (56.7) 3.5 (2.6-4.6) (ref) 6,125 (75) 4.0 (3.3-4.8) (ref) 2,198 (49.9) 0.2 (0-0.9) (ref) 7,785 (92.1) 1.3 (1.1-1.7) (ref) 4,137 (69.4) 1.9 (1.4-2.5) (ref) 4,736 (94.8) 0.2 (0.1-0.5) (ref) 4,419 (33.8) 0.2 (0.1-0.4) (ref)
 Rural 2,247 (43.3) 3.2 (2.2-4.5) 5,323 (25) 2.1 (1.5-2.9)§ 2,144 (50.1) 0.02 (0.003-0.1) 945 (7.9) 1.2 (0.6-2.7) 4,155 (30.6) 1.2 (0.8-1.8) 223 (5.2) 4,575 (66.2) 0.2 (0.1-0.5)
Education Level
 No or primary 1,768 (33.1) 2.2 (1.5-3.4) (ref) 1,547 (11.5) 2.2 (1.4-3.4) (ref) 3,706 (85.3) 0.1 (0.02-0.5) (ref) 3,485 (40.2) 0.6 (0.4-1.0) (ref) 837 (6.1) 0.1 (0.01-0.4) (ref) 1,987 (40) 0.1 (0.03-0.8) (ref) 6,067 (67.9) 0.11 (0.05-0.25) (ref)
 Secondary or higher 2,711 (66.9) 3.9 (3.1-5.1) 9,751 (88.5) 3.7 (3.1-4.4)§ 629 (14.7) 0.2 (0.02-1.1) 5,226 (59.8) 1.8 (1.4-2.3) 7,429 (93.9) 1.8 (1.4-2.3)§ 2,967 (60) 0.3 (0.2-0.5) 2,918 (32.1) 0.5 (0.2-1.0)
Wealth Index quintile
 Lowest, low, or middile 2,737 (51.1) 2.5 (1.7-3.5) (ref) 7,311 (56.4) 2.9 (2.3-3.5) (ref) 2,602 (56.2) (ref) 5,446 (61.9) 1.3 (1.0-1.7) (ref) 4,981 (44.6) 1.0 (0.6-1.5) (ref) 2,980 (57.1) 0.1 (0.1-0.3) (ref) 5,403 (60.7) 0.2 (0.1-0.4) (ref)
 High or highest 1,811 (48.9) 4.3 (3.3-5.6) 4,137 (43.6) 4.3 (3.4-5.4) 1,740 (43.8) 0.2 (0.1-1.0) 3,284 (38.1) 1.5 (1.1-2.0) 3,311 (55.4) 2.2 (1.7-2.9) 1,979 (42.9) 0.4 (0.1-1.0) 3,591 (39.3) 0.3 (0.2-0.6)

Abbreviation: CI = confidence interval.

Unweighted sample size and weighted percentage.

Weighted crude prevalence.

Data is not reliable based on the data suppression criteria that consider the effective sample size, degree of freedom, and the absolute and relative widths of the Korn and Graubard confidence interval.

§

Statistically significant different from the prevalence in reference group based on the contrast of marginal effect between groups adjusting for other sociodemographic factors in multivariable logistic regression model.