Table 4.
Distribution of histological groups by sex
| Known histology | Unknown histologya | ||||
|---|---|---|---|---|---|
| Male | Female | Male | Female | ||
| (n = 1812) | (n = 747) | (n = 922) | (n = 363) | ||
| Type of cancer | Type of cancer | ||||
| Squamous cell carcinoma | Squamous cell carcinoma | ||||
| Number | 585 | 93 | Number (95 % PI) | 296 (263–309) | 48 (35–61) |
| Percent (95 % CI) | 32.3 (30.1–34.4) | 12.5 (10.1–14.8) | Percent (95 % PI) | 32.1 (28.5–35.5) | 13.2 (9.6–16.8) |
| Adenocarcinoma | Adenocarcinoma | ||||
| Number | 908 | 583 | Number (95 % PI) | 482 (454–517) | 281 (264–297) |
| Percent (95 % CI) | 50.1 (47.8–52.4) | 78.0 (75.1–81.0) | Percent (95 % PI) | 52.3 (49.3–56.1) | 77.3 (72.7–81.8) |
| Other specified cancer | Other specified cancer | ||||
| Number | 219 | 71 | Number (95 % PI) | 144 (111–175) | 34 (20–51) |
| Percent (95 % CI) | 17.6 (15.0–20.2) | 9.5 (6.4–12.5) | Percent (95 % PI) | 15.6 (12.0–19.0) | 9.5 (5.5–14.1) |
Columns are arranged for patients with known histology (real data), and the estimated numbers and percentages by multiple imputation for patients with unknown histology (imputed)
aUnknown histology includes NSCC and true unknown histology. The distribution of the number of cases with known and unknown histology cases is not statistically significant with chi-square p-values of 0.235 and 0.968 for males and females, respectively. Those with known histology, the true number and the percentage with its 95 % CI (calculated from the standard error) are present. After 200 rounds of multiple imputation, the mean (estimated) number and the percentage of different cancer types among those with unknown histology, and 95 % PI are presented