Table 1

Characteristics of the study population by response status in 20–44 year old Norwegian men and women1-150 (n = 1200)

Non-attenders (n = 297) Attenders allergy and tuberculin tested but not read (n = 329) Attenders allergy and tuberculin tested and read1-151 (n = 574) p value1-152
Men, n (%)176 (59)172 (52)288 (50)<0.01
Mean (SD) age (years) 32 (7) 33 (6) 34 (7)<0.01
Spontaneous tuberculin converters prior to BCG vaccination, n (%)–  8 (3)  9 (2)0.28
BCG vaccinated, n (%)–319 (98)558 (95)0.13

  • ↵1-150 Randomly drawn from the general population of Bergen, Norway in 1991.

  • ↵1-151 Two sided p values based on corrected χ2 tests for proportions and on one way ANOVA for age.

  • ↵1-152 Nineteen subjects did not have documented information on their BCG vaccination status and were classified as unknown.