Table 2.
Distribution of major histological groups of lung cancer in women
| SCC | ADC | SCLC | LCC | ASC | Other | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (N) | RF† | (N) | RF† | (N) | RF† | (N) | RF† | (N) | RF† | (N) | RF† | |
| All areas | (574) | 8.12 | (4651) | 65.79 | (722) | 10.21 | (197) | 2.79 | (155) | 2.19 | (771) | 10.99 |
| Beijing | (213) | 7.05 | (1757) | 70.91 | (189) | 6.88 | (66) | 2.76 | (51) | 1.76 | (321) | 10.64 |
| Hebei | (71) | 7.49 | (591) | 59.07 | (178) | 17.44 | (25) | 2.44 | (24) | 2.61 | (101) | 10.95 |
| Neimenggu | (45) | 8.09 | (353) | 57.33 | (89) | 15.38 | (24) | 3.58 | (11) | 1.99 | (54) | 13.63 |
| Liaoning | (55) | 13.48 | (314) | 59.95 | (46) | 8.33 | (7) | 1.10 | (10) | 2.34 | (55) | 14.80 |
| Heilongjiang | (61) | 12.46 | (337) | 64.78 | (46) | 8.49 | (11) | 1.81 | (12) | 2.28 | (49) | 10.18 |
| Shandong | (28) | 8.40 | (302) | 65.24 | (41) | 9.17 | (12) | 3.09 | (7) | 1.31 | (35) | 12.79 |
†
Percentages adjusted with year of diagnosis by one-year and year of birth by five-year intervals.
Distributions of cases in the study areas were statistically significant for squamous cell carcinoma (SCC) (X2 = 21.916, P = 0.005), adenocarcinoma (ADC) (X2 = 34.475, P < 0.0001), and small cell carcinoma (SCLC) (X2 = 106.785, P < 0.0001), and not significant for large cell carcinoma (LCC) (X2 = 9.511, P = 0.301) and adeno-squamous carcinoma (ASC) (X2 = 2.564, P = 0.959). Rf, relative frequency.