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No. Name of Lifestyle Third Class Second Class First Class Type No. of Studies
1Coffee consumption+Current SmokerNACoffee+SmokeJoint effectProtective factor
No statistical significance factor
1
2Coffee consumption+Non-Smoker or past SmokerNACoffee+SmokeJoint effectNo statistical significance factor1
3Coffee+non-SmokersNACoffee+SmokeJoint effectNo statistical significance factor1