Use of anticonvulsants	Present	63	36.99	7.86		62	39.00	7.72		63	25.01	6.42		62	33.67	4.16
Use of anticonvulsants	Absent	11	37.18	4.90		11	39.60	5.51		12	25.33	4.91		12	33.24	4.06
Sites of contracture	Present	59	37.77	6.83		58	39.82	7.13		59	25.60	5.95		58	33.96	4.24
Sites of contracture	Absent	15	34.07	9.28		14	36.21	8.28		15	23.27	6.97		15	32.01	3.36
Sleep problems	Present	39	35.54	6.83		39	37.46	6.62	^*	40	23.81	5.65		40	33.17	4.04
Sleep problems	Absent	34	38.75	7.99		33	40.96	8.01	^*	34	26.62	6.56		34	34.11	4.22
Use of sleep-inducing drugs	Present	22	35.00	7.20		21	38.48	7.78		22	23.34	5.30		21	33.48	3.79
Use of sleep-inducing drugs	Absent	52	37.88	7.48		52	39.34	7.30		53	25.77	6.41		53	33.65	4.28
Marital status	Married	66	37.18	7.30		64	39.15	7.20		66	25.44	6.23		65	33.49	4.21
Marital status	Divorced	8	35.75	9.22		9	38.68	9.14		9	22.27	5.23		9	34.44	3.54
Employment status	Employed	13	35.55	5.69		13	37.08	5.31		13	24.31	5.42		13	33.77	4.80
Employment status	Unemployed	61	37.34	7.80		60	39.53	7.74		62	25.22	6.35		61	33.57	4.01
Chronic symptoms	Present	30	38.49	6.90		31	40.74	6.23		31	26.01	6.97		31	34.76	4.00	^*
Chronic symptoms	Absent	44	36.02	7.75		42	37.87	8.01		44	24.39	5.53		43	32.77	4.05	^*
Family occupation	Self-employed	10	38.95	7.87		10	40.00	7.87		10	25.20	6.39		10	35.36	4.11
Family occupation	Other	64	36.72	7.42		63	38.95	7.37		65	25.04	6.19		64	33.33	4.09
Living arrangements with grandparents	Living together	8	34.38	4.37		9	36.57	5.48		9	22.22	3.93		8	32.75	3.62
Living arrangements with grandparents	Living apart	66	37.34	7.72		64	39.45	7.59		66	25.45	6.34		66	33.71	4.19
Life events	Present	32	39.50	5.53	^**	33	41.00	6.21	^*	33	26.76	6.19	^*	32	33.99	3.50
Life events	Absent	42	35.13	8.23	^**	40	37.51	7.98	^*	42	23.72	5.90	^*	42	33.31	4.56
Use of at-home services	Present	24	40.06	6.77	^*	24	42.30	7.52	^**	25	27.04	6.39	^*	25	35.56	2.55	^**
Use of at-home services	Absent	50	35.56	7.41	^*	49	37.52	6.88	^**	50	24.07	5.88	^*	49	32.60	4.42	^**
Informal support	Present	14	38.64	4.97		13	40.38	5.20		14	27.79	5.21		14	34.72	3.66
Informal support	Absent	60	36.64	7.92		60	38.81	7.80		61	24.43	6.25		60	33.34	4.21