|  | All ACTG studies | Excluding substudies |
---|---|---|---|
Parameters | Â | Effect (95% CI) | Effect (95% CI) |
AR1 | Â | 0.04 (-0.37, 0.46) | -0.09 (-0.51, 0.33) |
Time trend effect |  | 29.7 (18.9, 40.5) ‡ | 12.8 (3.9, 21.7) § |
(per quarter) | Â | Â | Â |
Large studies effect *(per point weight) | 699.7 (535.5, 864.0) ‡ | 420.3 (284.2, 556.4) ‡ | |
Early starting effect †|  | -83.3 (-427.3, 260.7) | -436.7 (-731.1,-142.2) § |
Studies starting in same quarter (per study) | 20.6 (-1.4, 42.5) | -1.0 (-23.5, 21.4) | |
Seasonal effect | Â | Â | Â |
 | Spring | 152.7 (-78.8, 406.2) | 189.3 (-32.4, 410.9) |
 | Summer | 185.3 (-43.2, 413.7) | 115.3 (-90.6, 321.2) |
 | Fall | -144.5 (-365.2, 76.2) | -96.7 (-308.8, 115.4) |
Constant |  | 137.5 (-152.2, 427.2) | 576.5 (309.3, 843.7) ‡ |