Table 2.

Variables used to create the score of self-assessed vulnerability to infections compared to peers^a

Infections	Less prone to infections (n = 53) %	Similarly prone to infections (n = 181) %	More prone to infections (n = 58) %
Upper respiratory tract infections (IH1)
Far less frequent	100	19.3	0
Less frequent	0	53.0	19.0
Approximately equally frequent	0	17.1	50.0
More often	0	8.8	22.4
Much more often	0	1.7	8.6
Lower respiratory tract infections (IH2)
Far less frequent	100	39.8	1.7
Less frequent	0	45.3	25.9
Approximately equally frequent	0	12.2	58.6
More often	0	2.2	8.6
Much more often	0	0.6	5.2
Gastrointestinal tract infections (IH3)
Far less frequent	100	32.0	6.9
Less frequent	0	48.6	25.9
Approximately equally frequent	0	14.4	51.7
More often	0	4.4	10.3
Much more often	0	0.6	5.2
Bladder or kidney infections (IH4)
Far less frequent	100	52.5	3.4
Less frequent	0	43.1	22.4
Approximately equally frequent	0	3.3	53.4
More often	0	1.1	19.0
Much more often	0	0	1.7
Infections of skin and mucosa (IH5)
Far less frequent	100	50.3	12.1
Less frequent	0	38.1	29.3
Approximately equally frequent	0	8.8	46.6
More often	0	2.2	8.6
Much more often	0	0.6	3.4

^aThe score was derived by using factor analysis (see Methods section)