Table 1 Participants’ sociodemographic and sibling-related characteristics
Variables | Modality (for categorical variables) | Total sample (N = 374) | General population group (n = 187) | Clinical siblings (n = 187) | t or chi2 values for unmatched variables |
|---|---|---|---|---|---|
Sex (%) | Female | 288 (77.00) | 144 (77.00) | 144 (77.00) | |
Mean age in years (SD) | 35.96 (10.75) | 35.93 (10.76) | 36 (10.77) | − 0.07 | |
Professional activity (%) | None | 90 (24.06) | 55 (29.41) | 35 (18.72) | 5.28* |
Sex of target brother or sister (%) | Female | 74 (19.79) | 37 (19.79) | 37 (19.79) | |
Mean age difference between the two siblings (SD) | −0.26 (5.24) | − 0.67 (4.29) | 0.14 (6.02) | −1.49 | |
Participant’s birth order (%) | Youngest | 94 (25.13) | 39 (20.86) | 55 (29.41) | 2.37 |
Intermediate | 131 (35.03) | 67 (35.83) | 64 (34.22) | 0.05 | |
Oldest | 149 (39.84) | 81 (43.32) | 68 (36.36) | 1.12 | |
Target brother or sister’s birth order (%) | Youngest | 77 (20.59) | 21 (11.23) | 56 (29.9) | 18.91*** |
Intermediate | 168 (44.92) | 101 (54.01) | 67 (35.83) | 11.77*** | |
Oldest | 129 (34.49) | 65 (34.76) | 64 (34.22) | 0 | |
Living with sibling (%) | Same | 19 (4.95) | 7 (3.74) | 12 (6.42) | 0.89 |