Table 2. Internal consistency reliability and factor loading on the items of knowledge and attitude towards spontaneous ADR reporting.
| Item | Cronbach’s α if item deleted | Factor | ||
|---|---|---|---|---|
| 1 | 2 | 3 | ||
| General knowledge of SR (n = 974) | ||||
| Knowledge of SR system | 0.45 | 0.77* | ||
| Knowledge of RPC-KPA | 0.38 | 0.81* | ||
| Knowledge of related laws | 0.56 | 0.57* | ||
| Affiliated with KPA | 0.60 | 0.49* | ||
| Eigenvalue | 1.81 | |||
| Cumulative variance explained (%) | 45.21 | |||
| Attitude towards obstacles to SR (n = 856) | ||||
| Not serious ADR | 0.67 | -0.02 | 0.83* | -0.06 |
| Already well-known ADR | 0.67 | -0.02 | 0.85* | -0.01 |
| Uncertain about causality | 0.66 | 0.14 | 0.55* | 0.13 |
| Unaware of the reporting method | 0.65 | -0.01 | 0.08 | 0.80* |
| Complexity of reporting procedure | 0.62 | 0.18 | 0.11 | 0.80* |
| Lack of time for reporting | 0.66 | 0.22 | -0.09 | 0.53* |
| Liability of the pharmacy | 0.64 | 0.60* | -0.01 | 0.28 |
| Lack of compensation | 0.64 | 0.59* | 0.00 | 0.19 |
| No real improvement | 0.63 | 0.64* | 0.10 | 0.13 |
| Doctor did not want | 0.63 | 0.79* | 0.04 | 0.02 |
| Patient did not want | 0.65 | 0.68* | 0.03 | -0.02 |
| Eigenvalue | 2.75 | 1.71 | 1.30 | |
| Cumulative variance explained | 21.01 | 36.84 | 52.36 | |
| Attitude towards strategies to improve SR (n = 892) | ||||
| Provision of causality assessment to the reporter | 0.69 | 0.71* | 0.11 | |
| Continuous promotion and education on reporting | 0.70 | 0.66* | 0.11 | |
| Provision of educational resources based on reports | 0.68 | 0.68* | 0.24 | |
| Provision of a manual on handling ADR inquiries | 0.68 | 0.72* | 0.16 | |
| Simplification of reporting procedure | 0.67 | 0.33 | 0.59* | |
| Confidentiality of the reporter’s identity | 0.74 | 0.06 | 0.84* | |
| Legal protection of reporter | 0.68 | 0.14 | 0.81* | |
| Appropriate compensation for reporting | 0.69 | 0.13 | 0.46* | |
| Eigenvalue | 2.89 | 1.20 | ||
| Cumulative variance explained | 25.85 | 51.14 | ||
* Item loading > 0.4.
Abbreviations: ADR, adverse drug reaction; SR, spontaneous reporting; RPC-KPA, Regional Pharmacovigilance Center—Korean Pharmaceutical Association.