Table 1.
Incidence and Co-Occurrence of Sexual and Dating Victimization of Older Sisters (n = 122) and Younger Sisters (n = 122)
| Incidence and age 1st occurred | Unwanted touching | Forced sex act | Dating aggressiona |
|---|---|---|---|
| Older sister experienced (% [n]) | 41 (50) | 23 (28) | 29.5 (36) |
| M age 1st occurrence | 10.5 yrs | 13.5 yrs | 18.2 yrs |
| Age range 1st occurred (years) | 5–23 | 5–22 | 10–24 |
| Younger sister experienced (% [n]) | 20.5 (25) | 13.1 (16) | 11.5 (14) |
| M age 1st occurrence (years) | 9.5 | 12.8 | 17.1 |
| Age range 1st occurred (years) | 5–18 | 7–17 | 10–21 |
| Both sisters experiencedb (% [n]) | 13 (16) | 7 (8) | 7 (8) |
| Only older sisterb (% [n]) | 28 (34) | 16 (20) | 23 (28) |
| Only younger sisterb (% [n]) | 7 (9) | 7 (8) | 5 (6) |
| Neitherb (% [n]) | 52 (63) | 70 (86) | 65 (80) |
| Older sister abused 1stc (% [n]) | 69 (11) | 50 (4) | 62.5 (5) |
| Younger sister abused 1stc (% [n]) | 31 (5) | 50 (4) | 37.5 (3) |
| Intraclass correlationd | .35** | .38** | .31* |
a
Includes being hit, slapped, or punched so hard by a male partner it left a mark or bruise.
b
Out of the total sample of 122 sister pairs.
c
Out of sister pairs in which both had experienced that form of victimization.
d
Two-way mixed effect model.
*
p <.05.
**
p <.01.