Table 1.

Baseline measures for participants who completed baseline only (n = 451) and those who completed baseline and follow-up (n = 443).

	Baseline only group		Baseline and Follow-up group
Age	Mean	SD	Mean	SD
	13.37	1.64	13.28	1.68
Gender	n	%	n	%
Male	231	51.2	221	49.9
Female	220	48.8	222	50.1
Household annual income
<£30,000	102	22.6	81	18.3
>£30,000	319	70.7	326	73.6
Prefer not to say	30	6.7	36	8.1
Child ethnicity
Asian/Asian British	5	1.1	3	0.7
Black/Black British	3	0.7	2	0.5
Chinese/ Chinese British	1	0.2	0	0
Middle Eastern/Middle Eastern British	2	0.4	1	0.2
Mixed race – other	18	4.0	13	2.9
Mixed race – White and Black/Black British	5	1.1	3	0.7
Other ethnic group	2	0.4	1	0.2
Prefer not to say	2	0.4	1	0.2
White – British, Irish, other	413	91.6	419	94.6
Measure (minimum – maximum)
1. Loneliness (4–12)	6.85	2.01	6.65	1.92
2. SDQ – emotional symptoms (0–10)	3.47	2.58	3.61	2.58
3. SDQ – conduct problems (0–10)	2.22	1.90	2.10	1.71
4. SDQ – hyperactivity-inattention (0–10)	4.65	2.68	4.44	2.50
5. K6 psychological distress (0–24)	6.55	5.04	6.10	4.63
6. Time spent talking with friends and family via voice and video calls per day (0–5)	1.79	1.49	1.70	1.39
7. Time spent texting with friends and family per day (0–5)	1.83	1.36	1.77	1.29
8. Closeness with parents (0–3)	2.10	0.79	2.15	0.75

1No significant differences were found between those who completed follow-up and those who did not complete follow-up using chi-square for categorical variables, a t-test for age and MANOVA for the questionnaire measures.

SDQ=Strengths and Difficulties Questionnaire.