. 2019 Jul 26;7(3):e11929. doi: 10.2196/11929

Table 2.

Incidence and prevalence rates of acute symptoms and diseases when using different contact-free intervals.

Disease category				Incidence rate (per 1000 person years)					Prevalence rate (per 1000 person years)
				4 weeks		8 weeks		16 weeks		4 weeks		8 weeks	16 weeks
Acute symptoms/diseases (contact-free interval: 4 weeks) and ICPC^a code
	R74	Upper respiratory infection acute	60.6		55.7		50.3		54.9		57.3		61.6
	H81	Excessive ear wax	37.5		36.3		34.5		37.3		38.4		40.5
	L81	Other injury musculoskeletal system	17.9		16.6		15.4		17.4		18.0		19.4
	R21	Throat symptoms/complaints	18.0		16.7		15.4		16.6		17.2		18.5
	S18	Laceration/cut	15.7		15.1		14.6		16.9		17.4		18.5
Acute symptoms/diseases (contact-free interval: 8 weeks) and ICPC code
	U71	Cystitis/other urinary infection	60.7		52.9		44.7		49.1		50.5		53.4
	R05	Cough	54.0		48.5		42.9		48.4		50.5		54.3
	S74	Dermatophytosis	38.9		35.1		31.3		33.5		34.6		36.9
	L03	Low back symptoms/complaints without radiation	39.2		33.7		28.7		30.4		31.5		33.8
	A04	General weakness/tiredness/ill-feeling (excluding psychological)	32.7		29.1		25.8		29.6		30.5		32.5
Acute symptoms/diseases (contact-free interval: 16 weeks) and ICPC code
	D02	Stomach ache/stomach pain	41.0		34.6		19.1		21.8		22.4		23.5
	P06	Disturbances of sleep/insomnia	42.9		27.6		18.6		21.7		22.3		23.3
	P01	Feeling anxious/nervous/tense/inadequate	24.8		17.3		12.1		13.7		14.0		14.7
	S79	Other benign neoplasms of skin	13.4		12.5		11.8		13.1		13.4		14.4
	R81	Pneumonia	11.5		10.1		9.0		10.7		11.2		12.1