Year of publication | Total | Trend p value2-150 | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
50–54 | 55–59 | 60–64 | 65–69 | 70–74 | 75–79 | 80–84 | 85–89 | 90–94 | 95–3/98 | |||
Meta-analysis | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 | 3 | 9 | 0.0418 |
Observational | 1 | 0 | 3 | 6 | 6 | 28 | 25 | 65 | 72 | 39 | 245 | 0.716 |
Review | 0 | 0 | 0 | 0 | 1 | 0 | 4 | 12 | 26 | 26 | 69 | 0.0002 |
Trial | 1 | 2 | 3 | 7 | 21 | 61 | 122 | 115 | 172 | 102 | 606 | 0.0644 |
Total | 2 | 2 | 6 | 13 | 28 | 89 | 151 | 193 | 275 | 170 | 929 |
NB: Grand total is 929 not 930 as one study had no publication date.
↵2-150 χ2 Test for trend from 1950–54 to 1990–94.