Table 1– Distribution of key variables in the dataset among pre-intervention and post-intervention groups
VariableGroup AChi-squared test for equality of proportionsGroup BChi-squared test for equality of proportions
Post-interventionPre-interventionPost-interventionPre-intervention
Age yrs0.450.45
 <1629 (4.4)12 (3.9)12 (5.7)10 (7.1)
 16–2493 (14.2)54 (17.5)46 (21.8)26 (18.4)
 25–34203 (31.0)85 (27.6)68 (32.2)37 (26.2)
 35–44123 (18.8)51 (16.6)43 (20.4)40 (28.4)
 45–64125 (19.1)71 (23.1)26 (12.3)18 (12.8)
 ≥6579 (12.1)33 (10.7)16 (7.6)10 (7.1)
 Data missing3 (0.5)2 (0.6)0 (0)0 (0)
Country of birth0.60.62
 Outside UK461 (70.4)206 (66.9)181 (85.8)120 (85.1)
 UK141 (21.5)70 (22.7)21(10.0)17 (12.1)
 Data missing53 (8.1)32 (10.4)9 (4.3)4 (2.8)
Sex0.10.46
 Male380 (58.1)164 (53.2)124 (58.8)77 (54.6)
 Female274 (41.8)144 (46.8)87 (41.2)64 (45.4)
 Data missing1 (0.2)0 (0)0 (0)0 (0)
Seen in clinic with joint HIV/TB clinic0.410.06
 Yes324 (49.5)120 (39.0)129 (61.1)38 (27.0)
 No331 (50.5)188 (61.0)82 (38.9)103 (73.0)
Patient load in clinic
 Median39.975.3Wilcoxon signed rank test p<0.00135.117.7Wilcoxon signed rank test p<0.001
 IQR68.995.42516.3
  • Data are presented as n (%), unless otherwise stated. Group A clinics introduced universal opt-out testing and resources (n = 963); group B clinics already offered universal testing and introduced resources only (n = 352). TB: tuberculosis; IQR: interquartile range.