The cases 9 and 19 where a negative experience for the boy and are therefore not included in JUMIMA. They can be read in the article linked below or in the book.
Source: Rind, B. Gay and Bisexual Adolescent Boys' Sexual Experiences With Men: An Empirical Examination of Psychological Correlates in a Nonclinical Sample. Arch Sex Behav 30, 345–368 (2001). https://doi.org/10.1023/A:1010210630788
Note. Quotes for cases 1, 3, 4, 8, 10, 11, 14, 18, 20, and 25 were taken from Savin-Williams’ (Savin-Williams, 1997) book—page numbers are provided. Other quotes and descriptions were obtained directly from Savin-Williams. Ages of subjects and older partners when the sexual relations began are provided after the case numbers. A few subjects had additional sexual contacts with other men (Case 1 at age 14, then 15; Case 4 at age 17; Case 9, three more at age 16; Case 21, two more at age 17). Details were not recorded for these episodes.
Case 11 (boy 15, man 45). With a stranger (only once); mutually initiated oral sex. Subject said he later felt cheap because it was a stranger. “I met him at a gay theater. I came out thinking, finally I did it! I guess this is what is supposed to happen. I was nervous but I had a fake ID to get in. Looking back it made me feel really cheap. I didn’t like it because of the circumstances. Not dirty but it made it difficult to accept the whole gay thing until I fell in love in college” (p. 83).