Corrigendum to Does the Addition of a Supportive Chatbot Promote User Engagement with a Smoking Cessation App

Abstract

Perski O, David C, Emma B, and Jamie B. “Does the Addition of a Supportive Chatbot Promote User Engagement with a Smoking Cessation App? An Experimental Study.” DIGITAL HEALTH. DOI: 10.1177/2055207619880676 In this article, the values in Table 1 were incorrect. The correct table is mentioned as below: Table 1. Smoking characteristics in the full and follow-up only (FUO) samples. Full Total(N = 57,214) Full Control (n = 51,875) Full Intervention (n = 5,339) p* Time to first cigarette, % (N)a <.001  >60 minutes 19.1% (10,916) 19.3% (9,999) 17.2% (917)  31-60 minutes 19.0% (10,889) 19.0% (9,880) 18.9% (1,009)  5-30 minutes 37.7% (21,578) 37.8% (19,605) 37.0% (1,973)  <5 minutes 23.9% (13,648) 23.6% (12,235) 26.5% (1,413) Cigarettes per day, mean (SD)b 14.9 (9.1) 14.7 (8.9) 16.0 (11.4) <.001 FUO Total (N = 6,111) FUO Control (n = 5,050) FUO Intervention (n = 1,061) p* Time to first cigarette, % (N)c <.001  >60 minutes 18.6% (1,136) 19.3% (973) 15.4% (163)  31-60 minutes 22.4% (1,369) 22.4% (1,130) 22.5% (239)  5-30 minutes 38.5% (2,351) 38.8% (1,960) 36.9% (391)  <5 minutes 20.4% (1,245) 19.4% (978) 25.2% (267) Cigarettes per day, mean (SD)d 15.8 (7.8) 15.6 (7.8) 16.5 (7.9) <.001 Note. aData on time to first cigarette were missing for 183 participants (intervention: 27, control: 156). bData on CPD were missing for 185 participants (intervention: 48, control: 137). cData on time to first cigarette were missing for 10 participants (intervention: 1, control: 9). dData on CPD were missing for 25 participants (intervention: 16, control: 9). *Differences between groups were compared using Chi-square tests or t-tests, as appropriate.