Skip to main content
. Author manuscript; available in PMC: 2013 Sep 25.
Published in final edited form as: Ann Intern Med. 2010 Feb 2;152(3):144–151. doi: 10.7326/0003-4819-152-3-201002020-00005

Table 3. Frequency of Side Effects and Adverse Events by Treatment Arm.

Variable Standard Therapy (No. %) Extended Therapy (No. %)



Deaths 0/286 (0) 0/282 (0)
Withdrawal due to Adverse Event 0/286 (0) 1/282 (0.4)
Any Self-reported Serious Symptom 143/286 (50) 142/282 (50.4)
Serious Adverse Event 1/286 (0.4) 3/282 (1.1)
Week 1 Self-reported Serious Symptoms
Headache 5/252 (2.0) 3/247 (1.2)
Nausea 1/252 (0.4) 3/247 (1.2)
Alertness 11/252 (4.4) 16/247 (6.5)
Coughing 5/252 (2.0) 3/247 (1.2)
Pounding Heart 3/252 (1.2) 2/247 (0.8)
Diarrhea 2/252 (0.8) 0/247 (0)
Sleep Problems 7/252 (2.8) 19/247 (7.7)*
Skin Irritation or Rash 4/252 (1.6) 3/247 (1.2)
Calmness 5/252 (2.0) 9/247 (3.6)
Dizziness 1/252 (0.4) 1/247 (0.4)
Light Headedness 1/252 (0.4) 2/247 (0.8)
Sweating 8/252 (3.2) 3/247 (1.2)
Good or “High” Feeling 4/252 (1.6) 7/247 (2.8)
Watery Eyes 3/252 (1.2) 3/247 (1.2)
Coldness of Hands/Feet 7/252 (2.8) 6/247 (2.4)
Week 12 Self-reported Serious Symptoms
Headache 2/134 (1.5) 0/182 (0)
Nausea 1/134 (0.7) 1/182 (0.5)
Alertness 9/134 (6.7) 17/182 (9.3)
Coughing 3/134 (2.2) 5 (2.7)
Pounding Heart 2/134 (1.5) 0/182 (0)
Diarrhea 0/134 (0) 0/182 (0)
Sleep Problems 6/134 (4.5) 2/182 (1.1)
Skin Irritation or Rash 1/134 (0.7) 1/182 (0.5)
Calmness 4/134 (3.0) 5/182 (2.7)
Dizziness 0/134 (0) 1/182 (0.5)
Light Headedness 1/134 (0.7) 1/182 (0.5)
Sweating 2/134 (1.5) 4/182 (2.2)
Good or “High” Feeling 3/134 (2.2) 4/182 (2.2)
Watery Eyes 2/134 (1.5) 1/182 (0.5)
Coldness of Hands/Feet 2/134 (1.5) 3/182 (1.6)

Note. Any Self-reported Serious Symptom refers to the total number of participants who reported a severe side effect on the checklist across all time-points where side effects were assessed; a Serious Adverse Event refers to the total number of participants who reported a serious adverse event. Week 1 and week 12 Self-reported Serious Symptoms are those rated as 4 (severe) on the side effects checklist; No. = number of participants; * refers to difference between standard and extended treatment (p = 0.014); all items were scored such that higher values reflected greater severity of the item, even for positive items such as good or high feeling, alertness, and calmness