Table 1.
Characteristics of Studies, Participants, and Tuberculosis Cases by Baseline Tuberculin Test Result
| Author, Year | Study Years | Population | No. | TST+ (n) | TST− (n) | LTBI Prev. (%) | ARI (%) | Prop. Converted | Observation Time (years) | Cases LTBI | Cases UI |
| Geer 1934 [18] | 1928–1932 | Nursing students | 112 | 42 | 70 | 37.1 | 88.2 | 1.00 | 2.7 | 1 | 5 |
| Geer 1934 [18] | 1930–1932 | Nursing students | 181 | 55 | 126 | 30.4 | 75.0 | 0.88 | 1.5 | 0 | 3 |
| Heimbeck 1938 [19] | 1924–1936 | Young women | 1458 | 467 | 991 | 32.0 | 5.5 | 0.23 | 4.7 | 14 | 52 |
| Heimbeck 1938 [19] | 1924–1937 | Nurses | 682 | 403 | 279 | 59.1 | 8.8 | 0.26 | 3.3 | 6 | 20 |
| Heimbeck 1938 [19] | 1924–1938 | Nursing students | 952 | 668 | 284 | 70.2 | 100.0 | 1.00 | 2.6 | 22 | 97 |
| Myers 1940 [20] | 1929–1938 | Nursing students | 1100 | 281 | 819 | 25.5 | 21.2 | 0.51 | 3.0 | 7 | 33 |
| Myers 1941 [21] | 1929–1936 | Medical students | 449 | 160 | 289 | 35.6 | 16.0 | 0.50 | 4.0 | 2 | 11 |
| Hastings 1941 [22] | 1929–1938 | Nursing students | 504 | 142 | 362 | 28.2 | 17.1 | 0.43 | 4.0 | 1 | 9 |
| Brahdy,1941 [23] | 1935–1940 | Nursing students | 2230 | 1320 | 910 | 59.2 | 46.9 | 0.85 | 3.0 | 6 | 34 |
| Israel 1941 [24] | 1935–1941 | Nursing students | 637 | 177 | 460 | 27.8 | 78.1 | 0.95 | 2.2 | 11 | 56 |
| Wright 1941 [25] | 1936–1940 | Nursing students | 141 | 36 | 105 | 25.5 | 34.1 | 0.72 | 3.0 | 0 | 10 |
| Schwartz 1942 [26] | 1936–1941 | Nursing students | 228 | 114 | 114 | 59.4 | 80.1 | 0.24 | 3.0 | 1 | 5 |
| Daniels1944 [27] | 1934–1943 | Nurses | 2572 | 2120 | 452 | 82.4 | 56.9 | 0.92 | 2.8 | 30 | 34 |
| Lim-Yuen 1946 [28] | 1938–1943 | Sanitorium workers | 500 | 268 | 232 | 53.6 | 33.6 | 0.53 | 1.3 | 2 | 8 |
| Madsen1942 [29] | 1934–1940 | Medical students | 1258 | 936 | 322 | 74.4 | 18.0 | 0.47 | 3.3 | 12 | 38 |
| Madsen 1942 [29] | 1934–1940 | Students | 1676 | 1135 | 541 | 67.7 | 9.0 | 0.17 | 2.0 | 5 | 14 |
| Holm 1946 [30] | 1942–1945 | Adolescent students | 199 | 105 | 94 | 52.8 | 99.6 | 0.74 | 3.0 | 4 | 7 |
| Thompson 1949 [31] | 1942–1948 | Nursing students | 503 | 249 | 254 | 49.5 | 8.0 | 0.28 | 4.0 | 7 | 17 |
| Badger 1949 [32] | 1932–1948 | Nursing students | 736 | 374 | 362 | 50.8 | 46.4 | 0.85 | 5.0 | 22 | 36 |
| Dickie 1950 [33] | 1934–1947 | Medical students | 373 | 141 | 232 | 37.8 | 28.7 | 0.74 | 5.0 | 4 | 25 |
| Dickie 1950 [33] | 1934–1944 | Nursing students | 122 | 33 | 89 | 27.0 | 30.4 | 0.66 | 4.0 | 1 | 8 |
| Poole 1954 [34] | 1939–1952 | Nursing students | 1653 | 986 | 667 | 59.6 | 92.4 | 0.73 | 4.0 | 15 | 25 |
| Karns 1959 [35] | 1934–1954 | Medical students | 1620 | 747 | 873 | 46.1 | 12.4 | 0.41 | 4.0 | 5 | 11 |
| Median | 637 | 268 | 289 | 49.5 | 33.6 | 0.66 | 3.0 | 5.0 | 17.0 | ||
| Range | (112–2572) | (33–-2120) | (70 991) | (25.5–82.4) | (5.5–100.0) | (0.17–1.00) | (1.3–5.0) | (0–30) | (3–97) |
Abbreviations: ARI, annual risk of infection; LTBI, latent tuberculosis infection; TST, tuberculosis skin test; UI, uninfected.