Table 6.
Risk ratios for the number of patients improved related to environmental strategy in the meta‐analysis by Gøtzsche and Johansen37
| Strategy | RR | 95% CI | Patients (n) | P‐value | I 2 |
|---|---|---|---|---|---|
| Sojourn high altitude | NA | NA | NA | NA | NA |
| Total avoidance | NA | NA | NA | NA | NA |
| Exposure‐based | NA | NA | NA | NA | NA |
| Concurrent bedroom | 1.06 | 0.75‐1.50 | 282 | 0.82 | 0% |
| 1 barrier | 1.07 | 0.75‐1.53 | 233 | 0.77 | 0% |
| 2‐3 barriers | 0.85 | 0.19‐3.79 | 49 | 0.87 | 0% |
| Air purification | 0.67 | 0.24‐1.87 | 56 | 0.61 | 0% |
| Mixed strategies | 1.01 | 0.73‐1.40 | 338 | 0.96 | 0% |
| Gøtzsche & Johansena | 1.01 | 0.80‐1.27 | 338 | 0.94 | 0% |
a
Risk ratios as calculated by Gøtzsche and Johansen37 with a fixed‐effect model.