Table 3.

Set of Six Factors and 19 Items Selected in the Derivation Sample Analyses for the WSWS2-L and WSWS2-B)

Subscale	Items
Negative Affect	Feeling unhappy Feeling upset Feeling stressed Feeling angry
Hunger	Eating a lot Feeling hungry Thinking about food a lot
Craving	Having urges to smoke Wanting to smoke Thinking about smoking
Sleep	Feeling tired Waking frequently during the night Troubled sleep
Restlessness	Feeling restless Having trouble sitting still Feeling fidgety
Concentration	Having trouble paying attention Having trouble thinking clearly Having trouble concentrating

Note. WSWS2-L = Wisconsin Smoking Withdrawal Scale 2. Underlined items are the items selected for the brief version of the WSWS2 (WSWS2-B).