Table 2. Cross correlation coefficient between data streams in different lags.
Period 1 | Period 2 | Period 3 | |||||||
Lag days | CV with OTC | CV with SA | OTC with SA | CV with OTC | CV with SA | OTC with SA | CV with OTC | CV with SA | OTC with SA |
−14 | −0.13 | 0.03 | 0.25* | 0.22* | 0.23* | 0.60* | 0.17 | −0.03 | −0.10 |
−13 | −0.08 | 0.05 | 0.29* | 0.22* | 0.21* | 0.63* | 0.19* | −0.03 | −0.05 |
−12 | −0.03 | 0.07 | 0.33* | 0.22* | 0.18* | 0.63* | 0.23* | −0.03 | 0.00 |
−11 | 0.02 | 0.08 | 0.37* | 0.19* | 0.16 | 0.60* | 0.26* | −0.02 | 0.04 |
−10 | 0.07 | 0.08 | 0.42* | 0.15 | 0.15 | 0.56* | 0.30* | −0.01 | 0.09 |
−9 | 0.12 | 0.10 | 0.47* | 0.11 | 0.16 | 0.51* | 0.35* | 0.01 | 0.13 |
−8 | 0.18 | 0.12 | 0.49* | 0.07 | 0.18* | 0.48* | 0.40* | 0.04 | 0.16 |
−7 | 0.23* | 0.12 | 0.50* | 0.05 | 0.22* | 0.45* | 0.44* | 0.05 | 0.17 |
−6 | 0.29* | 0.13 | 0.52* | 0.04 | 0.26* | 0.42* | 0.49* | 0.05 | 0.17 |
−5 | 0.35* | 0.15 | 0.52* | 0.04 | 0.31* | 0.41* | 0.53* | 0.04 | 0.17 |
−4 | 0.40* | 0.20 | 0.52* | 0.07 | 0.33* | 0.43* | 0.56* | 0.03 | 0.17 |
−3 | 0.45* | 0.26* | 0.52* | 0.11 | 0.33* | 0.44* | 0.59* | 0.01 | 0.17 |
−2 | 0.51* | 0.31* | 0.52* | 0.15 | 0.32* | 0.46* | 0.62* | −0.02 | 0.18* |
−1 | 0.56* | 0.36* | 0.51* | 0.20* | 0.29* | 0.46* | 0.64* | −0.05 | 0.21* |
0 | 0.62* | 0.43* | 0.49* | 0.26* | 0.25* | 0.45* | 0.66* | −0.06 | 0.24* |
1 | 0.67* | 0.50* | 0.48* | 0.30* | 0.20* | 0.44* | 0.65* | −0.08 | 0.26* |
2 | 0.73* | 0.57* | 0.46* | 0.36* | 0.15 | 0.43* | 0.64* | −0.08 | 0.27* |
3 | 0.76* | 0.57* | 0.43* | 0.39* | 0.12 | 0.40* | 0.62* | −0.09 | 0.28* |
4 | 0.78* | 0.52* | 0.39* | 0.44* | 0.09 | 0.37* | 0.61* | −0.08 | 0.28* |
5 | 0.79* | 0.46* | 0.37* | 0.47* | 0.05 | 0.35* | 0.61* | −0.05 | 0.28* |
6 | 0.79* | 0.41* | 0.35* | 0.49* | 0.01 | 0.34* | 0.60* | −0.02 | 0.28* |
7 | 0.79* | 0.35* | 0.31* | 0.49* | −0.03 | 0.34* | 0.60* | 0.00 | 0.26* |
8 | 0.78* | 0.27* | 0.27* | 0.46* | −0.06 | 0.34* | 0.61* | 0.02 | 0.24* |
9 | 0.75* | 0.21 | 0.23* | 0.41* | −0.08 | 0.34* | 0.61* | 0.03 | 0.22* |
10 | 0.71* | 0.17 | 0.18 | 0.37* | −0.10 | 0.33* | 0.61* | 0.05 | 0.19* |
11 | 0.68* | 0.14 | 0.12 | 0.30* | −0.13 | 0.33* | 0.62* | 0.06 | 0.17 |
12 | 0.63* | 0.13 | 0.06 | 0.24* | −0.11 | 0.33* | 0.61* | 0.06 | 0.16 |
13 | 0.56* | 0.13 | 0.02 | 0.18* | −0.09 | 0.31* | 0.60* | 0.06 | 0.16 |
14 | 0.52* | 0.11 | −0.01 | 0.14 | −0.07 | 0.28* | 0.60* | 0.06 | 0.16 |
* Cross correlation coefficient is significant (P≤0.05).
CV: clinic visits; OTC: over-the-counter; SA: school absence.