Table 1. Descriptive statistics of prognostic factors in women with invasive ductal carcinomas (n=172).
| Variable | Categories | All frequency |
|---|---|---|
| Receptor status | Receptor positive | 126 (79.8%) |
| Receptor negative | 32 (20.2%) | |
| Missinga | 14 | |
| Malignancy grade | Grade 1 | 60 (37.3%) |
| Grade 2–3 | 101 (62.7%) | |
| Missing | 11 | |
| Lymph node (LN) status | Node negative | 93 (56.4%) |
| Node positive | 72 (43.6%) | |
| Missinga | 7 | |
| Tumour size | 2 cm or less | 97 (58.1%) |
| More than 2 cm | 70 (41.9%) | |
| Missinga | 5 | |
| Stage (TNM) | Stage 1 | 65 (40.1%) |
| Stage 2–4 | 97 (59.9%) | |
| Missinga | 10 | |
| Nottingham Prognostic Index (NPI) | Good prognosis | 60 (39.5%) |
| Moderate prognosis | 77 (50.7%) | |
| Poor prognosis | 15 (9.9%) | |
| Missinga | 20 |
a
Missing values are excluded from the analysis.