Table 4.
Meta‐analyses affected by limiting the search of bibliographic databases to one database plus ancillary sources (shortcut 1).
| Original SR‐MA | After shortcut | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Author | Meta‐analysis | Obs/trials/studies | Summary estimate (95% CI) | Q | p | I 2 | Obs/trials/studies | Summary estimate (95% CI) | Q | p | I 2 |
| Bucher et al., 2015 | 7. Immersion chilling with unspecified disinfectant | 316/4/3 | OR 0.284 (0.026, 3.081) | 12.68 | 0.005 | 76.3% | 244/3/2 | OR 0.297 (0.014, 6.165) | 11.07 | 0.004 | 81.9% |
| Greig et al., 2012 | 2. Final carcass wash (+wash) | 1145/18/2 | OR 0.133 (0.050, 0.349) | 73.24 | <0.001 | 76.8% | 640/8/1 | OR 0.014 (0.005, 0.040) | 7.98 | 0.334 | 12.3% |
| Greig et al., 2012 | 3. Final carcass wash | 838/10/4 | OR 0.563 (0.414, 0.766) | 8.42 | 0.493 | 0.0% | 588/5/2 | OR 0.590 (0.359, 0.968) | 5.34 | 0.254 | 25.1% |
| Greig et al., 2012 | 4. Pasteurization — steam | 3286/17/6 | OR 0.134 (0.080, 0.223) | 25.07 | 0.069 | 36.2% | 2866/12/4 | OR 0.172 (0.100, 0.294) | 16.68 | 0.118 | 34.0% |
| Greig et al., 2012 | 5. Pasteurization – steam + lactic acid | 150/3/2 | OR 0.010 (0.002, 0.039) | 1.62 | 0.444 | 0.0% | All studies excluded | n/a | n/a | n/a | n/a |
| Greig et al., 2012 | 6. Pasteurization — hot water | 450/9/2 | OR 0.089 (0.053, 0.148) | 8.00 | 0.434 | 0.0% | 300/6/1 | OR 0.095 (0.051, 0.180) | 4.84 | 0.435 | 0.0% |
| Greig et al., 2012 | 7. Overall pasteurization rate | 3986/31/10 | OR 0.092 (0.062, 0.135) | 47.63 | 0.022 | 37.0% | 3166/18/5 | OR 0.134 (0.090, 0.199) | 22.04 | 0.183 | 22.9% |
| Greig et al., 2012 | 9. Dry chill | 925/9/4 | OR 0.166 (0.114, 0.242) | 4.59 | 0.800 | 0.0% | 825/7/3 | OR 0.159 (0.107, 0.234) | 3.70 | 0.717 | 0.0% |
| Greig et al., 2012 | 11. Spray chill | 2156/4/2 | OR 5.233 (0.128, 214.186) | 62.14 | 0.000 | 95.2% | 2006/1/1 | OR 0.097a (0.057, 0.165) | n/a | n/a | n/a |
| Greig et al., 2012 | 12.Final carcass wash (+wash) | 1145/18/2 | SMD −1.741 (−2.367, −1.116) | 326.3 | <0.001 | 94.8% | 640/8/1 | SMD −3.059 (−3.817, −2.300) | 77.74 | <0.001 | 91.0% |
| Greig et al., 2012 | 13. Final carcass wash (wash) | 566/9/3 | SMD −0.279 (−0.521, −0.037) | 15.25 | 0.009 | 67.2% | 100/2/1 | SMD −0.301 (−0.580, −0.022) | 0.00 | 0.991 | 0.0% |
| Greig et al., 2012 | 14. Final carcass wash (wash+) | 2200/5/1 | SMD −0.206 (−0.339, −0.074) | 20.00 | <0.001 | 80.0% | Study excluded | n/a | n/a | n/a | n/a |
| Greig et al., 2012 | 17. Dry age chill | 1119/3/2 | SMD −0.130 (−0.205, −0.055) | 1.43 | 0.488 | 0.0% | 80/1/1 | SMD −0.100a (−0.218, 0.018) | n/a | n/a | n/a |
| Greig et al., 2012 | 18. Spray chill | 3421/6/4 | SMD −0.243 (−0.553, 0.067) | 60.69 | 0.000 | 93.4% | 240/1/1 | SMD −0.200a (−0.337, −0.063) | n/a | n/a | n/a |
| Wilhelm et al., 2011 | 1. HACCP on aerobic bacterial counts | 2486/(n/a)/3 | SMD −0.747 (−0.943, −0.551) | 5.16 | 0.076 | 61.3% | 2006/(n/a)/2 | SMD −1.059 (−1.859, −0.259) | 4.23 | 0.040 | 76.3% |
Obs, observations; CI, confidence interval; OR, odd ratio; Q, Cochran's Q statistic; n/a, not applicable, SMD, standardized mean difference.
a
Effect estimate from a single trial, not a pooled estimate from meta‐analysis.