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. Author manuscript; available in PMC: 2017 Feb 9.
Published in final edited form as: JAMA. 2016 Nov 8;316(18):1879–1887. doi: 10.1001/jama.2016.16141

Table 2.

Bi-Monthly and Overall Observed Counts and Percentages of Bacteriuria Plus Pyuria Specimens by Treatment Status (N=185)

Treatment Control
Count/Total %a 95% CIc Count/Total %a 95% CIc
Baseline 26/92 28.3 20.0, 38.3 32/93 34.4 25.5, 44.6
2 Months 21/76 27.6 18.8, 38.7 27/78 34.6 24.9, 45.8
4 Months 15/63 23.8 14.9, 35.8 26/65 40.0 28.9, 52.3
6 Months 13/64 20.3 12.2, 31.9 20/67 29.9 20.1, 41.8
8 Months 14/55 25.5 15.7, 38.5 14/60 23.3 14.3, 35.6
10 Months 15/51 29.4 18.6, 43.2 13/54 24.1 14.5, 37.2
12 Months 12/44 27.3 16.2, 42.1 9/46 19.6 10.5, 33.5
Ove rail 90/353b 25.5b 18.6, 33.9 109/370b 29.5b 22.2, 37.9

Abbreviations: CI Confidence Interval

a

These percentages represent the number of study participants at each time point (baseline or follow up time) having a specimen with bacteriuria plus pyuria divided by the number of study participants enrolled and followed at the specified time point multiplied by 100.

b

This percentage represents the sum of the number of specimens with bacteriuria plus pyuria occurring during the six follow-up periods (months 2-12) divided by the sum of the number of study participant assessments during the six follow-up time points (i.e., the sum of the Total counts) multiplied by 100. 1110 (=185*6) observations were scheduled to be collected across six follow-up time points of which 723 were actually obtained, 353 in the treatment group and 370 in the control group.

c

Confidence intervals for binomial proportions were estimated using the logit method. For further details, consult the Statistical Methods Appendix.