Table 4 Adjusted rate ratios for the numbers of unique visitors per HIV centre for each month between June 2014 and May 2016 in an observational cohort study of the effect of rainfall on HIV outcomes in Southern Africa

Per relative 10 percentile decrease in rainfall^b

0.77 (0.64–0.94)

0.80 (0.66–0.98)

Months since Jan 2014

1.04 (1.02–1.05)

1.03 (1.02–1.05)

NDVI ≥ 0.3

0.63 (0.37–1.08)

0.90 (0.50–1.61)

Urban region

1.75 (0.97–3.14)

1.43 (0.78–2.60)

Rural region

Adjusted for cohort

Fully adjusted^a

 Per relative 10 percentile decrease in rainfall^b

0.81 (0.56–1.19)

0.80 (0.53–1.19)

 Months since Jan 2014

0.98 (0.95–1.01)

0.99 (0.95–1.01)

 NDVI ≥ 0.3

1.04 (0.53–2.02)

1.15 (0.57–2.34)

Urban region

Adjusted for cohort

Fully adjusted^a

 Per relative 10 percentile decrease in rainfall^b

0.79 (0.64–0.98)

0.83 (0.66–1.05)

 Months since Jan 2014

1.06 (1.04–1.08)

1.05 (1.04–1.07)

 NDVI ≥ 0.3

0.35 (0.13–0.93)

0.50 (0.17–1.44)