Are non-responders in a quitline evaluation more likely to be smokers - a drop-out and long-term follow-up study of the Swedish National Tobacco Quitline?
Non-responders to a 12-month follow-up smoking cessation questionnaire in a quitline setting were more likely to be smokers 1.5-3 years later. We propose a conservative correction factor of 0.8 for self-reported abstinence in telephone-based cessation studies if the response rate is approximately 55-65 %.
Our results demonstrate that photorespiration is strongly involved in NH(3) emission by rice leaves and suggest that differences in AER between cultivars result from their different GS activities, which would result in different capacities for reassimilation of photorespiratory NH(3). The results also suggest that NH(3) emission in rice leaves is not directly controlled by transpiration and stomatal conductance.