Table 1.
Participant details with group demographics and hormone levels are shown below. Two-tailed t tests were performed to compare group differences unless otherwise stated. #values for DHEA are Median and Interquartile range respectively, and a Mann Whitney U test was used to explore group differences in DHEA, since the distribution of this measure was positively skewed. SD = Standard deviation. Bold p values indicate significance at p < 0.05. Sample sizes are indicated for each measure where they are less than the total sample.
| F | Early puberty (n = 22) | Late puberty (n = 39) | Test statistic | P value |
|---|---|---|---|---|
| Mean (SD) | Mean (SD) | |||
| Age, years | 13.7 (0.72) | 14.4 (0.89) | t = −3.29 | p = 0.002 |
| IQ (n = 59) | 108 (14.2) | 114 (10.6) | t = −1.59 | p = 0.12 |
| Testosterone, pg/ml (n = 56) | 63.5 (20.8) | 120 (42.4) | t = −6.65 | p < 0.001 |
| DHEA#, pg/ml (n = 56) | 112 (94.4) # | 131 (98.8) # | U = 317# | p = 0.5# |
| Oestradiol, pg/ml (n = 53) | 1.51 (0.69) | 1.74 (0.12) | t = −1.12 | p = 0.3 |
| BMI (n = 48) | 21.0 (4.1) | 19.9 (2.7) | t = 1.12 | p = 0.3 |
| Head movement (mean volume-to-volume displacement, mm) | 0.90 (0.21) | 0.75 (0.19) | t = 2.92 | p = 0.005 |