https://doi.org/10.1002/14651858.CD010216.pub10
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RCTs
|
Study ID |
Comparison |
Time point (months) |
Data |
Between group difference (↑ Higher product use in intervention arm; ↔ equivocal; ↓ lower product use in intervention arm) |
|
Auer 2024 |
EC v. behavioural support only |
6 months |
At 6 months 368 of the 552 (67%) participants contacted in the intervention arm were using EC. |
n/a |
|
Begh 2021 |
EC v. no treatment |
8 months |
35% (52/148) in EC arm using EC at 8 months. |
n/a |
|
Carpenter 2023 |
EC v. no treatment |
6 months |
At 6 months 44% of the EC group were still using an EC; however, it is unclear whether the denominator was number randomised (427) or number followed up (292), making it impossible to calculate absolute numbers. |
n/a |
|
Dawkins 2020 |
EC v. behavioural support only |
6 months |
56% (27/48 (randomised)) or 77% (27/35 (FU)) in EC arm using EC at 6 months. |
n/a |
|
Holliday 2019 |
EC v. no treatment |
6 months |
72% (21/29) in EC arm using EC at 6 months. |
n/a |
|
Kouroutzoglou 2024 |
EC v. NRT |
6 months |
“at 6 months among users of EC 6 continued vaping nicotine alone, 7 continued to smoke tobacco cigarettes while vaping and 4 continued smoking cigarettes alone. Nevertheless only 2 out of 19 participants in that group stayed abstinent from both combustible cigarette smoking and vaping.” Rates not reported for NRT. |
|
|
Martinez 2021 |
Advice to use nicotine EC to quit vs standard quitting advice |
6 |
64% in the targeted booklet arm, 66% in the generic booklet arm were still using EC at 6 months follow-up (participants were dual users at baseline) |
↔ |
|
Pope 2024 |
EC v. behavioural support only |
6 months |
At 6 months 125 of 317 (39.4%) participants contacted in the EC arm were using EC |
n/a |
|
Pulvers 2020 |
EC v. no treatment |
6 months |
44% 55/126 (randomised) or 57% (55/96 (at FU)) were still using EC (EC and dual use) at 6 months in the EC arm |
n/a |
|
Smith 2025 |
EC v NRT |
4 weeks |
EC arm Use 1 per week: 85%, use at least 4 days/week: 70% NRT 1 x per week: 80% patch, 70% lozenge, 60% patch + lozenge NRT at least 4 days/week: 60% patch, 40% lozenge, 40% (patch + lozenge) |
↑ |
|
Walker 2020 |
Nicotine EC + nicotine patch vs non-nicotine EC + nicotine patch |
6 |
36% (179/500 (randomised)) or 57% (179/317 (at FU)) were still using EC in nicotine EC + patch arm at 6 months 24% 152/624 (randomised) or 49% (152/308 at FU) were still using non nicotine EC in the non-nicotine + patch arm |
↑
|
|
Xu 2023* |
EC v. behavioural support only |
12 months |
At 12 months 174 of the 566 randomised reported using nicotine EC |
n/a |
|
Study ID |
Time point (months) |
Data |
Frequency over time[1] (↓ decline; ↔ equivocal; ↑ increase) |
|
Edwards 2023 |
6 |
80% (24/30 (randomised)) or 92% (24/26 (at FU)) still using EC at 6 month follow-up. EC type: refillable. Country: Australia. |
↓ |
|
Caponnetto 2013b* |
12 |
64% (9/14 randomised and followed up) still using EC at 12 month follow-up. EC type: cig-a-like. Country: Italy. |
↓ |
|
Ely 2013 |
6 |
42% (20/48 (randomised)) or 46% (20/44 (at FU)) still using EC at 6 month follow-up. EC type: cig-a-like. Country: USA. |
↓ |
|
Pacifici 2015 |
8 |
77% (26/34 (randomised and followed up)) still using EC at 6 month follow-up. EC type: refillable. Country: Italy. |
↓ |
|
Polosa 2011* |
6 |
55% (22/40 (randomised)) or 82% (22/27(at FU)) still using EC at 6 month follow-up. EC type: cig-a-like. Country: Italy. |
↓ |
|
Price 2022 |
12 |
5% of the 871 participants provided with an e-cigarette, charger, and fluid were still using an e-cigarette at 12 month follow-up. 56% (43/77 at FU) were still using EC. The 43 people were using EC with nicotine, EC without nicotine and dual EC CC use.) EC type: refillable. Country: England, UK |
↓ |