National youth sedentary behavior and physical activity daily patterns using latent class analysis applied to accelerometry

Table 2 Percent agreement and weighted kappa by age, gender, and school characteristics among youth 6–17 years; NHANES 2003–2006

	Age			Gender		In or Out School
	6–11 years (n = 1588)	12–14 years (n = 1247	15–17 years (N = 1163)	Boys (n = 2006)	Girls (n = 1192)	In School (n = 2873)	Out of School (n = 817)
Latent class: average CPM per day
% agreement	40.2	97.0	94.4	85.1	83.7	93.7	60.2
Weighted kappa	0.30	0.96	0.90	0.83	0.73	0.92	0.46
Latent class: percent of sedentary (0- < 100 CPM) out of total wearing time per day
% agreement	52.2	71.0	78.9	85.2	87.7	80.6	46.5
Weighted kappa	0.48	0.67	0.75	0.85	0.88	0.80	0.39
Latent: class percent of light (100–2295) CPM) out of total wearing time per day
% agreement	31.9	63.4	81.1	97.0	95.9	96.3	36.8
Weighted kappa	0.14	0.53	0.75	0.97	0.96	0.96	0.31
Latent class: percent of MVPA (> = 2296 CPM) out of total wearing time per day
% agreement	86.4	93.3	88.7	88.3	94.9	94.4	86.5
Weighted kappa	0.8	0.89	0.74	0.85	0.88	0.89	0.77
Latent class: of vigorous physical activity (> = 4012 CPM) out of total wearing time per day
% agreement	94.1	91.4	89.9	89.7	94.7	97.3	86.2
Weighted kappa	0.89	0.71	0.73	0.83	0.81	0.94	0.70

ISSN: 1479-5868