Table 3.

Mean and standard deviation scores for mental wellbeing (SWEMWBS) in the overall population

Characteristic	Category	Frequency (%)	Mean (Score)	SD (Score)	Effect size	P value
Sex	Male	271 (57.9%)	20.84	3.37	0.18	0.91
	Female	197 (42.1%)	20.29	3.22
Age	12–14 years	122 (26.1%)	19.81	3.38	0.32	0.23
	15–17 years	85 (18.2%)	20.78	3.08
	18–20 years	65 (13.9%)	19.85	3.05
	21–23 years	48 (10.3%)	21.04	3.32
	24–25 years	148 (31.5%)	21.35	3.34
Education level	Primary Schooling	165 (35.3%)	19.87	3.27	0.25	0.058
	Secondary Schooling	122 (26.1%)	21.54	3.17
	College	3 (0.6%)	25.45	2.48
	University	13 (2.8%)	22.84	2.67
	Other	165 (35.3%)	20.36	3.24
Type of disability	Physical disabilities	187 (40.0%)	21.07	3.36	0.24	0.13
	Visual disabilities	21 (4.5%)	19.49	3.07
	Hearing disabilities	34 (7.3%)	20.20	3.68
	Mental health disabilities	22 (4.7%)	19.54	1.92
	Intellectual Disabilities	26 (5.6%)	20.1	3.57
	Learning Disabilities	9 (1.9%)	18.99	3.91
	Two or More Disabilities	56 (12.0%)	18.55	3.37
	Prefer Not to Say	113 (24.1%)	21.64	2.63
Nationality	Zambian	240 (51.3%)	19.61	3.45	0.42	0.0
	Sierra Leonean	228 (48.7%)	21.65	2.84

SWEMWBS Short Warwick Edinburgh Mental Wellbeing Scale. Poor mental wellbeing was defined as the presence of SWEMWBS metric score 7–19.3. This cut-off was selected based on previous literature. Lower SWEMWBS scores indicate poorer mental wellbeing