Table 2. Characteristics of the study population

Characteristic	Trainees from the majority group(n = 1404, 82.6%)		Trainees from second-generation ethnic minority groups(n = 196, 66.2%)		Trainees from first-generation ethnic minority groups(n = 100, 33.8%)		Total ethnic minority population(n = 296, 17.4%)		P value	Total study population (N = 1700)
Characteristic	n	%	n	%	n	%	n	%		n	%
Sex
Female	1007	71.7	138	70.4	57	57.0	195	65.9	—	1202	70.7
Male	397	28.3	58	29.6	43	43.0	101	34.1	—	498	29.3
Age at start GP specialty training
Age, years, mean (SD)	—		28.9 (3.6)		31.6 (4.9)		29.9 (4.2)		<0.001	28.9 (3.4)
GP specialty training institute
1	210	15.0	—	—	—	—	54	18.2	—	264	15.5
2	206	14.7	—	—	—	—	21	7.1	—	227	13.4
3	161	11.5	—	—	—	—	35	11.8	—	196	11.5
4	209	14.9	—	—	—	—	57	19.3	—	266	15.6
5	243	17.3	—	—	—	—	37	12.5	—	280	16.5
6	164	11.7	—	—	—	—	41	13.9	—	205	12.1
7	211	15.0	—	—	—	—	51	17.2	—	262	15.4
Start year of training
2015	501	35.7	66	33.7	37	37.0	103	34.8	—	604	35.5
2016	492	35.0	75	38.3	34	34.0	109	36.8	—	601	35.4
2017	411	29.3	55	28.1	29	29.0	84	28.4	—	495	29.1
Occurrence of predefined underperformance events
Underperformance(≥1 events)	101	7.2	—	—	—	—	53	17.9	<0.001	154	9.1
Mandatory coaching pathway	87	6.2	—	—	—	—	46	15.5	<0.001	133	7.8
Extension of education	69	4.9	—	—	—	—	33	11.1	<0.001	102	6.0
Preliminary dropout^a	—	—	—	—	—	—	—	—	—	23	1.4

^aThe number of preliminary dropouts prompted by the educational institute in the overall study population was too small to analyse its proportions for ethnic minority and majority trainees without infringing the strict privacy protection rules that applied to this study.