Table 6

Threshold, sensitivity and specificity of neck circumference for detecting overweight, obesity and abdominal obesity in Iranian children and adolescents by sex and age groups: the CASPIAN IV study

Age (year)-sex group	Overweight			General obesity			Abdominal obesity
Age (year)-sex group	Cut-off point	Sensitivity	Specificity	Cut-off point	Sensitivity	Specificity	cut-off point	Sensitivity	Specificity
Age group—boys
7	27.05	0.63	0.73	27.05	0.76	0.72	26.45	0.71	0.68
8	27.65	0.70	0.67	27.55	0.70	0.66	27.05	0.68	0.64
9	28.05	0.64	0.74	28.55	0.76	0.77	27.95	0.75	0.63
10	28.65	0.73	0.67	29.05	0.79	0.78	28.55	0.79	0.70
11	29.55	0.76	0.71	30.75	0.87	0.85	29.95	0.79	0.76
12	30.55	0.74	0.73	31.05	0.81	0.81	30.65	0.78	0.78
13	31.45	0.73	0.71	32.05	0.77	0.78	31.05	0.72	0.75
14	32.05	0.67	0.67	32.80	0.77	0.71	31.90	0.72	0.60
15	33.45	0.70	0.65	34.95	0.83	0.78	33.80	0.75	0.69
16	34.95	0.78	0.64	36.05	0.82	0.82	35.05	0.70	0.77
17	35.45	0.70	0.61	36.60	0.78	0.76	35.90	0.74	0.66
18	36.05	0.67	0.68	37.10	0.73	0.77	36.15	0.73	0.71
7–10	27.85	0.74	0.63	28.05	0.70	0.75	27.35	0.71	0.61
10–14	30.15	0.76	0.63	31.95	0.78	0.76	30.75	0.77	0.71
14–18	34.95	0.72	0.60	36.06	0.78	0.80	35.05	0.71	0.73
Age group—girls
7	25.90	0.70	0.61	27.05	0.81	0.81	25.90	0.67	0.62
8	26.25	0.69	0.63	27.15	0.67	0.76	26.55	0.70	0.69
9	27.95	0.82	0.70	28.05	0.77	0.77	27.95	0.79	0.71
10	28.55	0.76	0.73	29.90	0.89	0.84	28.45	0.75	0.72
11	29.05	0.76	0.72	30.25	0.82	0.82	29.05	0.76	0.72
12	30.05	0.69	0.71	30.90	0.78	0.73	30.05	0.67	0.72
13	31.10	0.65	0.68	32.05	0.71	0.79	31.25	0.72	0.71
14	31.90	0.78	0.67	32.25	0.78	0.76	31.65	0.72	0.68
15	32.05	0.62	0.71	32.90	0.78	0.72	32.05	0.68	0.73
16	32.60	0.70	0.69	34.10	0.81	0.86	32.75	0.76	0.72
17	32.85	0.80	0.68	33.05	0.73	0.74	32.95	0.72	0.71
18	32.96	0.75	0.66	33.25	0.73	0.73	32.20	0.72	0.64
7–10	27.45	0.71	0.69	27.95	0.78	0.70	27.05	0.73	0.70
10–14	30.45	0.75	0.64	31.35	0.76	0.75	30.90	0.73	0.68
14–18	32.85	0.70	0.70	33.45	0.77	0.77	32.55	0.71	0.72