Correlation between Google Trends on dengue fever and national surveillance report in Indonesia

Figures & data

Table 1. List of search terms.

Num	Category	Search Term	Description	Source
1.	Disease definition	‘demam berdarah’, ‘dengue’, ‘dengue fever’, ‘fever’, ‘penyakit demam’, ‘penyakit demam berdarah’	Terms are used to identify searching pattern related to disease definition in bahasa Indonesia	Google Correlate
		‘demam berdarah dengue pdf’, ‘dengue hemorrhagic fever’, ‘dhf’, ‘demam berdarah dengue’, ‘dbd’		Google Trends
2.	Symptom	‘berdarah’, ‘demam’	Terms are used to identify searching pattern related to dengue symptom in bahasa Indonesia	Google Correlate
		‘gejala demam berdarah dengue’, ‘gejala demam berdarah’		Google Trends
3.	Treatment	‘obat demam berdarah dengue’	Terms are used to identify searching pattern related to dengue treatment in bahasa Indonesia	Google Trends
4.	Vector of disease	‘aedes’, ‘aedes aegypti’, ‘aegypti’	Terms are used to identify searching pattern related to dengue vector in bahasa Indonesia	Google Correlate

Figure 1. Time series of dengue cases in Indonesia (2012–2016).

Figure 2. Moving average of dengue cases and information seeking using search term ‘gejala demam berdarah’, ‘demam berdarah’, and ‘dbd’ in Indonesia (2012–2016).

DOI for Dataset: 10.17632/x855pphhx9.1

Table 2. Result of pearson correlation.

Time Period	Search Term
	‘gejala demam berdarah’ (dengue symptom)	‘demam berdarah’ (dengue)	‘dbd’ (abbreviation of dengue)
Overall period	0.937*	0.931*	0.921*
2012	0.936*	0.918*	0.862*
2013	0.847*	0.850*	0.719*
2014	0.844*	0.814*	0.570
2015	0.921*	0.929*	0.918*
2016	0.954*	0.966*	0.950*

*significant in p ≤ 0.05.

Table 3. Result of time lag correlation.

Time lag	Search Term
	‘gejala demam berdarah’ (dengue symptom)		‘demam berdarah’ (dengue)		‘dbd’ (abbreviation of dengue)
	r	p-value	r	p-value	r	p-value
−3	0.264*	0.047	0.283*	0.033	0.356*	0.007
−2	0.517*	<0.001	0.526*	<0.001	0.567*	<0.001
−1	0.773*	<0.001	0.755*	<0.001	0.767*	<0.001
0	0.937*	<0.001	0.931*	<0.001	0.921*	<0.001

*significant in p ≤ 0.05