TABLE 2.

Activity and diet behaviours in summer holidays relative to school time. ^a

	School				Summer holidays				Mixed‐effects model β (95% CI)	p‐value
	Mean	SD	Min	Max	Mean	SD	Min	Max
MARCA b (n = 133)
Domestic/social	61	42	1	228	105	95	0	480	45 (30, 59)	0.000*
Screen	186	96	20	517	259	141	0	713	73 (51, 94)	0.000*
School‐related	218	94	3	423	53	67	0	393	−165 (−181, −149)	0.000*
Self‐care	107	20	65	171	130	38	35	230	23 (16, 30)	0.000*
Passive transport	37	23	0	143	59	74	0	725	22 (9, 35)	0.001*
Quiet time	60	29	16	184	76	74	0	325	16 (3, 29)	0.016*
Physical activity	148	60	36	370	131	100	0	480	−17 (−35, 0.9)	0.063
Sleep	627	87	388	857	623	52	430	1140	4 (−12, 20)	0.648
GENEActiv c (n = 133)
Sleep	563	28	503	632	550	42	442	644	−13 (−19, −7)	0.000*
Sedentary	513	69	354	741	540	96	352	823	27 (15, 39)	0.000*
LPA	288	50	152	418	284	75	118	484	−3 (−12, 6)	0.481
MVPA	79	28	29	154	68	44	3	306	−12 (−19, −5)	0.001*
Total counts	272 219	45 306	162 125	38 495	235 729	50 244	117 370	378 212	−36 491 (−43 834, −29 148)	0.000*
Diet d (n = 128)
Energy (kJ)	8142	1725	4576	16 741	8205	2628	3821	17 705	64 (−416 544)	0.794
Protein (g)	77	24	38	231	76	27	19	156	−0.8 (−6, 5)	0.771
Total fat (g)	74	20	19	147	79	33	23	205	5 (−1, 12)	0.098
Carbohydrate (g)	234	53	127	480	228	77	100	512	−6 (−19, 8)	0.399
Fruit (# of serves)	2	1	0	5	1	1	0	8	−0.4 (−0.7, −0.2)	0.000*
Vegetables and legumes (# of serves)	3	2	0	11	2	2	0	11	−0.5 (−0.9, −0.1)	0.018
Grains (# of serves)	4	2	1	17	4	2	0	11	−0.4 (−0.9, 0.1)	0.122
Meats and alternatives (# of serves)	1	1	0	6	1	1	0	5	−0.07 (−0.3, 0.2)	0.554
Dairy (# of serves)	1	1	0.1	4	1	1	0	6	−0.05 (−0.3, 0.2)	0.657
Discretionary choices (# of serves)	5	2	0.5	14	6	4	0	22	0.6 (−0.1, 1.4)	0.097
Diet quality (/score 100)	39	9	14	59	35	13	0	70	−4 (−6, −2)	0.000*

Note: Bold text denotes statistical significance p < 0.05, with * denoting statistical significance after Holm–Bonferroni adjustment was applied. Activity values are in minutes per day, except for counts. Analyses adjusted for the nested sample design (observations nested within participants, within schools and within waves).

Abbreviations: BMI, body mass index; LPA, light‐intensity physical activity; MARCA, Multimedia Activity Recall for Children and Adolescents; MVPA, moderate‐to‐vigorous physical activity; SEP, socioeconomic position.

^a The comparator is the in school value.

^b Participants with complete MARCA data for holiday and in‐school measurements, sex, BMI, SEP (composite measure) and pubertal status.

^c Participants with complete GENE data for holiday and in‐school measurements, sex, BMI, SEP and pubertal status.

^d Participants with complete diet data for holiday and in‐school measurements, sex, BMI, SEP and pubertal status.