Table 4 Incidence of CL at ages years 0–4 over the period 1990–2003 and population movements between 1990 and 1999 with stratification by the 1990 population density of the communes
From: Childhood leukaemia and population movements in France, 1990–2003
Low density | Medium density | High density | |||||||
|---|---|---|---|---|---|---|---|---|---|
E | SIRR | 95% CI | E | SIRR | 95% CI | E | SIRR | 95% CI | |
All communes | ⩽180 inh km−2 | 180–1729 inh km−2 | >1729 inh km−2 | ||||||
Migrants from another région | |||||||||
⩽7% | 382.3 | 1.00 | Ref. | 367.4 | 1.00 | Ref. | 427.7 | 1.00 | Ref. |
⩽13% | 421.3 | 1.10 | [0.95–1.27] | 422.0 | 0.96 | [0.84–1.10] | 537.5 | 0.96 | [0.85–1.10] |
>13% | 190.9 | 1.27 | [1.07–1.51] | 215.1 | 1.01 | [0.86–1.19] | 165.5 | 1.01 | [0.84–1.21] |
Migrants from a distant commune (>100 km) | |||||||||
⩽7% | 480.7 | 1.00 | Ref. | 433.0 | 1.00 | Ref. | 439.3 | 1.00 | Ref. |
⩽12% | 340.7 | 1.06 | [0.92–1.22] | 345.3 | 1.09 | [0.95–1.26] | 446.0 | 0.99 | [0.87–1.14] |
>12% | 173.1 | 1.22 | [1.03–1.45] | 226.2 | 1.04 | [0.89–1.22] | 245.4 | 1.09 | [0.94–1.28] |
Weighted average migration distance (km) | |||||||||
⩽82 | 454.9 | 1.00 | Ref. | 404.4 | 1.00 | Ref. | 363.4 | 1.00 | Ref. |
⩽185 | 438.4 | 1.12 | [0.98–1.28] | 457.9 | 1.06 | [0.93–1.21] | 500.8 | 1.00 | [0.87–1.14] |
>185 | 101.2 | 1.28 | [1.04–1.58] | 142.3 | 1.09 | [0.91–1.31] | 266.5 | 1.09 | [0.91–1.25] |
‘Non-isolated’ communes | ≤394 inh km−2 | 394–2607 inh km−2 | >2607 inh km−2 | ||||||
Migrants from another région | |||||||||
⩽7% | 323.0 | 1.00 | Ref. | 335.1 | 1.00 | Ref. | 343.0 | 1.00 | Ref. |
⩽13% | 345.6 | 1.02 | [0.87–1.19] | 348.8 | 0.97 | [0.84–1.12] | 466.1 | 1.00 | [0.86–1.15] |
>13% | 149.2 | 1.19 | [0.99–1.44] | 166.3 | 0.96 | [0.80–1.15] | 136.4 | 1.08 | [0.88–1.31] |
Migrants from a distant commune (>120 km) | |||||||||
⩽7% | 353.3 | 1.00 | Ref. | 355.4 | 1.00 | Ref. | 312.6 | 1.00 | Ref. |
⩽12% | 302.1 | 1.04 | [0.89–1.21] | 306.7 | 1.03 | [0.88–1.19] | 421.1 | 1.02 | [0.88–1.19] |
>12% | 162.4 | 1.19 | [0.99–1.43] | 188.1 | 0.99 | [0.83–1.18] | 211.7 | 1.11 | [0.93–1.32] |
Weighted average migration distance (km) | |||||||||
⩽82 | 388.6 | 1.00 | Ref. | 332.8 | 1.00 | Ref. | 297.5 | 1.00 | Ref. |
⩽185 | 338.2 | 1.06 | [0.92–1.23] | 408.9 | 1.02 | [0.88–1.18] | 401.5 | 1.02 | [0.87–1.19] |
>185 | 91.1 | 1.21 | [0.98–1.51] | 108.6 | 0.98 | [0.79–1.21] | 246.4 | 1.10 | [0.93–1.3] |
‘Isolated’ communes | ⩽45 inh km−2 | >45 inh km−2 | |||||||
Migrants from another region | |||||||||
⩽7% | 83.8 | 1.00 | Ref. | 92.4 | 1.00 | Ref. | |||
⩽13% | 110.5 | 1.04 | [0.76–1.41] | 109.8 | 1.11 | [0.86–1.44] | |||
>13% | 66.4 | 1.27 | [0.91–1.77] | 53.3 | 1.17 | [0.86–1.60] | |||
Migrants from a distant commune (>60 km) | |||||||||
⩽8% | 88.6 | 1.00 | Ref. | 97.8 | 1.00 | Ref. | |||
⩽14% | 109.2 | 0.95 | [0.7–1.29] | 108.5 | 0.95 | [0.73–1.24] | |||
>14% | 62.9 | 1.21 | [0.87–1.68] | 49.3 | 1.35 | [1.00–1.81] | |||
Weighted average migration distance (km) | |||||||||
⩽82 | 99.7 | 1.00 | Ref. | 104.1 | 1.00 | Ref. | |||
⩽185 | 129.2 | 1.14 | [0.86–1.50] | 119.3 | 1.25 | [0.97–1.61] | |||
>185 | 31.8 | 1.09 | [0.71–1.66] | 32.1 | 1.72 | [1.23–2.39] | |||
