Table 2. Participant characteristics, average self-assessment of pain ratings and pain tolerance.

Demographic information		All (N = 17)	TD (N = 7)	ASD (N = 10)	p-value
	Age (years)	12.5 ± 2.0	12.9± 1.8	12.6 ± 2.2	age: p = 0.76
	Handedness	1L, 16 R	0L, 7R	1L, 9R
	Full Scale IQ	97.3 ± 20.5	113.2 ± 12.9*	87.8 ± 18.3	IQ: p = 0.01
Subjective Pain Ratings		All (N = 16)	TD (N = 7)	ASD (N = 9)
	Tepid water	0.21 ± 0.6	0.33 ± 0.9	0.11 ± 0.3	groups: p = 0.628
	Cold water	5.88 ± 2.9	6.17 ± 1.8	5.65 + 3.5	task: p < 0.01
Pain tolerance (duration of trial)		All (N = 17)	TD (N = 7)	ASD (N = 10)
	Tepid water (s)	62.68 ± 5.9	64.32 ± 2.8	61.58 ± 7.3	groups: p = 0.09
	Cold water (s)	127.38 ± 68.9	166.30 ± 41.5	108.8 ± 73.7	trials: p = 0.406

Age and IQ values show (mean ± standard deviation). Handedness shows number of left-handed (L) and right handed (R) participants. *IQ was not available for one participant (P107) in the TD group. Values represent mean ± standard deviation.