Table 2.
Reproducibility indicators of analyzed nephrology articles
| Characteristics | Variables |
|
|---|---|---|
| n (%) | [95% CI] | |
| Funding (n = 295) | ||
| University | 7 (2.4) | [0.7–4.1] |
| Hospital | 2 (0.7) | [0.3–1.6] |
| Public | 63 (21.3) | [21.4–16.7] |
| Private/Industry | 19 (6.4) | [3.7–9.2] |
| Nonprofit | 3 (1.0) | [0.1–2.2] |
| No statement listed | 129 (43.7) | [38.1–49.3] |
| No funding received | 19 (6.4) | [3.7–9.2] |
| Mixed funding received | 53 (18.0) | [13.6–22.3] |
| Conflict of interest statement (n = 295) | ||
| Statement provided 1 or more conflicts of interest | 65 (22.0) | [17.3–26.7] |
| Statement provided no conflict of interest | 188 (63.7) | [58.3–69.2] |
| No conflict of interest statement provided | 42 (14.2) | [10.3–18.2] |
| Data availability (n = 172) | ||
| Statement was provided saying some data were available | 41 (23.8) | [19.0–28.7] |
| Statement was provided saying no data were available | 2 (1.2) | [0.1–2.4] |
| No data availability statement provided | 129 (75.0) | [70.1–79.9] |
| Material availability (n = 167) | ||
| Statement provided saying some materials were available | 26 (15.6) | [11.5–19.7] |
| Statement provided saying some materials were not available | 1 (0.6) | [0.3–1.5] |
| No materials availability statement provided | 140 (83.8) | [79.7–89.0] |
| Analysis script availability (n = 172) | ||
| Statement provided saying an analysis script was available | 4 (2.3) | [0.6–4.0] |
| Statement provided saying analysis scripts were not available | 1 (0.6) | [0.3–1.4] |
| No analysis script availability statement was provided | 167 (97.1) | [95.2–99.0] |
| Replication studies (n = 172) | ||
| Replication study | 0 (0.0) | [0.0–0.0] |
| No statement was provided stating the study was a replicated publication | 172 (100.0) | [100.0–100.0] |
| Cited by systematic review/meta-analysis (n = 167) | ||
| Not cited | 167 (100.0) | [100.0–100.0] |
| Cited a single time | 0 (0.0) | [0.0–0.0] |
| Cited 1 to 5 times | 1 (0.6) | [0.0–1.8] |
| Cited more than 5 times | 2 (1.2) | [0.0–2.8] |
| Cited by a replication study (n = 167) | ||
| Not cited | 167 (100) | [100.0–100.0] |
| Cited a single time | 0 (0.0) | [0.0–0.0] |
| Protocol availability (n = 71) | ||
| Protocol was made available | 0 (0.0) | [0.0–0.0] |
| No protocol was made available | 71 (100.0) | [100.0–100.0] |
| Preregistration (n = 71) | ||
| Statement provided saying publication was preregistered | 8 (11.3) | [3.9–18.6] |
| Statement provided saying publication was not preregistered | 0 (0.0) | [0.0–0.0] |
| There is no preregistration statement provided in the publication | 63 (88.7) | [81.4–96.1] |
| Open access (n = 295) | ||
| Yes, the publication was found via Open Access Button | 148 (49.3) | [4.4–55.0] |
| Yes, the publication was found via other means | 4 (1.3) | [0.0–2.6] |
| The publication could not access through paywall | 143 (48.5) | [42.0–53.3] |
CI, confidence interval.