. 2023 Sep 27;23:632. doi: 10.1186/s12879-023-08594-1

Table 2.

Stationarity and model fitting evaluations in the original data obtained from South and North China, Wuhan City, and the Central Hospital of Wuhan

Time series data (ILI%)	ADF	KPSS	Ljung-Box
South Cities	-6.883	< 0.001*	0.353	0.097	290.256	< 0.001*
North Cities Wuhan City Central Hospital	-5.382 -5.662 -6.847	< 0.001* < 0.001* < 0.001*	0.259 0.172 0.161	0.100 0.100 0.100	325.231 444.401 197.877	< 0.001* < 0.001* < 0.001*

Time series data
(ILI%)

ADF

KPSS

Ljung-Box

t- statistic

χ ² - statistic

South Cities

-6.883

< 0.001*

0.353

0.097

290.256

< 0.001*

North Cities

Wuhan City

Central Hospital

-5.382

-5.662

-6.847

< 0.001*

0.259

0.172

0.161

0.100

325.231

444.401

197.877

< 0.001*

ILI: influenza-like illness; ADF: augmented Dickey-Fuller test; KPSS: Kwiatkowski-Phillips-Schmidt-Shin test

*P-value < 0.05 with statistical significance