Table 5 Sensitivity analyses of use of 5α-reductase inhibitors and risk of oesophageal and gastric cancer by histological type and anatomical sub-site.

From: Use of anti-androgenic 5α-reductase inhibitors and risk of oesophageal and gastric cancer by histological type and anatomical sub-site

Outcomes

Number of cases in users/non-users

Adjusted hazard ratio (95% confidence interval)*

Excluding participants with <1 year of follow-up

Oesophageal or gastric cardia adenocarcinoma

 Non-user

2385

1.00 (Reference)

 User

247

0.94 (0.82–1.07)

Gastric non-cardia adenocarcinoma

 Non-user

1707

1.00 (Reference)

 User

182

0.96 (0.82–1.12)

Oesophageal squamous cell carcinoma

 Non-user

684

1.00 (Reference)

 User

40

0.55 (0.40–0.76)

Censoring those diagnosed with other cancers during follow-up

Oesophageal or gastric cardia adenocarcinoma

 Non-user

3328

1.00 (Reference)

 User

345

0.94 (0.84–1.05)

Gastric non-cardia adenocarcinoma

 Non-user

2567

1.00 (Reference)

 User

264

0.92 (0.81–1.05)

Oesophageal squamous cell carcinoma

 Non-user

985

1.00 (Reference)

 User

53

0.50 (0.38–0.67)

  1. *Adjusted for age, calendar year, tobacco smoking or smoking-related diagnoses, use of non-steroidal anti-inflammatory drugs or aspirin, and use of statins, with further adjustment for gastro-oesophageal reflux disease, obesity or diabetes, and Helicobacter pylori treatment for oesophageal or cardia gastric adenocarcinoma, further adjustment for obesity or diabetes, and Helicobacter pylori treatment for non-cardia gastric adenocarcinoma, and further adjustment for alcohol overconsumption-related diagnoses for oesophageal squamous cell carcinoma.