Table 1. Distribution of enterprise scale and ownership type with BIL in 7 PLADs, 2005−2019.
| Item | Number of BIL (%) * | |||
| 2005−2008 | 2009−2012 | 2013−2016 | 2017−2019 | |
| Abbreviations: BIL=benzene-induced leukemia; PLADs=provincial-level administrative divisions.
* The proportion of new cases of leukemia in the total cases of leukemia in different enterprise categories. | ||||
| Total | 115 | 260 | 216 | 108 |
| Enterprise scale | ||||
| Large | 36 (31.3) | 46 (17.7) | 57 (26.5) | 16 (14.7) |
| Medium | 33 (28.7) | 108 (41.5) | 64 (29.8) | 43 (39.4) |
| Small | 21 (18.3) | 81 (31.2) | 70 (32.6) | 34 (31.2) |
| Mini-sized | 0 (0) | 0 (0) | 1 (0.5) | 5 (4.6) |
| Unrevealed | 25 (21.7) | 25 (9.6) | 23 (10.7) | 11 (10.1) |
| Ownership type | ||||
| State-owned | 18 (15.7) | 18 (6.9) | 19 (8.8) | 8 (7.3) |
| Collective | 5 (4.3) | 6 (2.3) | 2 (0.9) | 0 (0) |
| Pooling | 1 (0.9) | 4 (1.5) | 1 (0.5) | 2 (1.8) |
| Private | 20 (17.4) | 55 (21.2) | 59 (27.3) | 36 (33) |
| Foreign | 14 (12.2) | 54 (20.8) | 34 (15.7) | 12 (11) |
| Hong Kong, Macao, and Taiwan of mainland China | 2 (1.7) | 43 (16.6) | 24 (11.1) | 31 (28.4) |
| Stock | 43 (37.4) | 51 (19.7) | 56 (25.9) | 17 (15.6) |
| Unrevealed | 12 (10.4) | 28 (10.8) | 21 (9.7) | 3 (2.8) |