Study 2 also found a higher relapse rate of patients who followed NRT under 1 year, similarly suggesting that treatments should continue for long times and be repeated.

Tobacco Control. 2006 Aug;15(4):280-5.
Nicotine replacement therapy for long-term smoking cessation: a meta-analysis. By Etter JF, Stapleton JA.

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Study 3 states that the use of pharmaceuticals including NRT doubles the success of stopping smoking.

Expert Opin Pharmaco. 2006 Apr;7(6):783-92.
Treating tobacco use and dependence in clinical practice. By Cornuz J.

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Study 4 suggests that NRT itself does not increase the chances of stopping smoking. However, a combination of NRT and counseling helps significantly.

Subst Use Misuse. 2005;40:1923-43, 2043-8.
Combination treatment for nicotine dependence: state of the science. By Ingersoll KS, Cohen J.

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Study 5 found that it was more effective and cost effective to stop smoking with telephone counseling than NRT.

Aust N Z J Public Health. 2006 Oct;30(5):428-34.
Cost effectiveness analysis of smoking cessation interventions. By Shearer J, Shanahan M.

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Study 6 suggests that a combination of NRT, counseling and other pharmaceuticals will help in stopping smoking, but these therapies work better for women than men.

Worldviews Evid Based Nurs. 2005;2(2):63-74.
Evidence for smoking cessation: Implications for gender-specific strategies. By Singleton JK, Levin RF, Feldman HR, Truglio-Londrigan M.

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Study 7 found that younger smokers in a socioeconomically deprived areas received little benefit with NRT, mainly because of culture and commitment.

Tobacco Control 2006;15:373-376
Use of nicotine replacement therapy in socioeconomically deprived young smokers: a community-based pilot randomized controlled trial. By Roddy E, Romilly M, Challenger A, Lewis S, Britton J

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