Table 1. Cohen’s κ Coefficients and Percentage Observer Agreement by Age Group, Sex, and Physical Activity Code, Durham, North Carolina, 2007 .
| Child Sex, Agea, and Activity Level | κ Coefficient (% Observer Agreement) |
|||||
|---|---|---|---|---|---|---|
| Training (127 Paired Observations) | Week 1 (130 Paired Observations) | Week 4 (152 Paired Observations) | Week 5 (117 Paired Observations) | Week 7 (120 Paired Observations) | Week 8 (75 Paired Observations) | |
| Female, YC, S | 0.67 (93.7) | 0.57 (96.2) | 0.66 (98.7) | 0.56 (94.0) | 0.80 (97.5) | 0.81 (97.3) |
| Female, YC, W | 0.26 (92.1) | 0.38 (95.4) | 0.74 (98.7) | 0.15 (92.3) | 0.59 (98.3) | 0 (98.7) |
| Female, YC, V | 0.56 (93.7) | 0 (99.2) | 1.00 (100) | −0.01 (98.3) | 0.66 (99.2) | 0 (98.7) |
| Male, YC, S | 0.63 (96.1) | 0.39 (97.7) | 0.80 (98.7) | 0.84 (98.3) | 0.79 (98.3) | 0.49 (97.3) |
| Male, YC, W | 0.77 (96.1) | 0.71 (98.5) | 0.80 (98.7) | 0.59 (98.3) | 0.56 (97.5) | 0.66 (98.7) |
| Male, YC, V | 0.65 (96.9) | 1.00 (100) | 0.80 (99.3) | 0.24 (97.4) | 0.80 (99.2) | 1.00 (100) |
| Female, MC, S | 0.68 (92.9) | 0 (99.2) | 0.66 (97.4) | 0.81 (98.3) | 0.95 (99.2) | 0.87 (98.7) |
| Female, MC, W | 0.44 (89.0) | 0.49 (97.7) | 0.63 (97.4) | 0.66 (98.3) | 1.00 (100) | 0 (98.7) |
| Female, MC, V | 0.49 (91.3) | 0.66 (99.2) | 0.63 (97.4) | 0 (98.3) | 1.00 (100) | (100)b |
| Male, MC, S | 0.55 (89.0) | 1.00 (100) | 0.65 (97.4) | 0.59 (96.6) | 0.75 (96.7) | 0.90 (98.7) |
| Male, MC, W | 0.60 (91.3) | (100)b | 0.66 (96.7) | 0.66 (99.2) | 0.87 (98.3) | 0.66 (98.7) |
| Male, MC, V | 0.51 (94.5) | 0 (99.2) | 0.93 (99.3) | 0.49 (98.3) | 0.56 (97.5) | (100)b |
| Female, OC, S | 0.55 (96.9) | (100)b | 0.66 (99.3) | 0.66 (99.2) | 0.66 (99.2) | 1.00 (100)b |
| Female, OC, W | 0.43 (96.1) | (100)b | 0.89 (99.3) | (100)b | 1.00 (100)b | (100)b |
| Female, OC, V | (100)b | (100)b | 1.00 (100) | (100)b | 0 (99.2) | (100)b |
| Male, OC, S | 0.68 (94.5) | (100)b | 0.50 (99.3) | 0.83 (99.2) | 0.66 (99.2) | 0 (98.7) |
| Male, OC, W | 0.66 (93.7) | (100)b | (100)b | 0.62 (97.4) | 0.66 (99.2) | −0.03 (93.3) |
| Male, OC, V | 0.83 (97.7) | (100)b | 0.66 (99.3) | 0.80 (99.2) | (100)b | 0 (98.7) |
Abbreviations: MC, middle child; OC, older child; S, sedentary physical activity; V, vigorous physical activity; W, walking or moderately active physical activity; YC, young child.
a
Young child = age 0 to 5 years, middle child = age 6 to 12 years, old child = age 13 to 18 years.
b
No variability observed; therefore, a weighted κ cannot provide a meaningful test statistic.