Figure 4  .

The effect of taking daily warfarin tablets (A) and having blood tests (B) on the child's quality of life as perceived by the child and parent. The level of function, upset, and satisfaction related to taking warfarin tablets and having blood tests were each scored on a scale between 1 and 7 and summed. The cumulative score ranged from 3 (no adverse effect on quality of life) to 21 (worst effect). Patient 4 suffers from needle phobia. c, child score; p, parent score for the first child and each of the following children. See text and fig 1 for detailed description of questions and scoring system.