Table 1

Reasons for subjects becoming inactive

ReasonVitamin A N (%)Placebo N (%)P
Abnormal blood parameter29 (8.4)35 (10.6)0.33
Clinical symptom60 (17.3)56 (16.9)0.88
Both clinical symptom and abnormal blood parameter1 (0.3)3 (0.9)0.29
Symptoms not consistent with vitamin A35 (10.1)18 (5.4)0.02
Illness of subject, spouse, or close relative60 (17.3)66 (19.9)0.38
Participant moved out of the locality of the study center18 (5.2)17 (5.1)0.99
Too busy or lost interest30 (8.6)17 (5.1)0.07
Lost to follow-up17 (5.9)15 (4.5)0.81
Fulfilled commitment to study18 (5.9)26 (7.6)0.16
Fear of possible side effects from intervention10 (2.9)12 (3.6)0.59
Other68 (19.6)66 (19.9)0.93
Total346331