Table 1 Missing data patterns simulated for each PROM
OKS | SF-12 | SF-12 | EQ-5D-3L | EQ-5D-3L | |
|---|---|---|---|---|---|
OKS missingness patterns | Observed missing data pattern | SF-12 missingness patterns | Observed missing data pattern | EQ-5D-3L missingness patterns | Observed missing data pattern |
Unit-nonresponse | 73.1% | Unit-nonresponse | 56.1% | Unit-nonresponse | 87.9% |
Only item 7 missing | 15.6% | Only item 2b missing | 20.3% | Only item 5 missing | 5.1% |
Only item 4 missing | 3.3% | Only item 4b missing | 6.5% | Only item 1 missing | 2.6% |
Only item 6 missing | 2.7% | Items 2b and 3b missing | 4.5% | Only item 4 missing | 1.8% |
Only item 9 missing | 2.1% | Only item 3b missing | 4.0% | Only item 3 missing | 1.5% |
Only item 10 missing | 1.5% | Items 2b, 3b and 4b missing | 3.5% | Only item 2 missing | 1.1% |
Only item 1 missing | 0.9% | Items 2b and 4b missing | 3.3% | n/a | Other patterns occurred too infrequently to be used in simulation |
Only item 12 missing | 0.9% | Only item 6c missing | 1.8% | n/a | |