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. 2021 Sep 20;88(5):448–456. doi: 10.1097/QAI.0000000000002811

TABLE 3.

Change in Share of Viral Load Tests That Show Viral Suppression After the Start of the Lockdown (Regression Results)

Full Mildmay Cohort Mildmay Cohort With a Viral Load Measure Before and After the Start of the Lockdown
(1) (2) (3) (4)
Unadjusted Interrupted Time Series Unadjusted Interrupted Time Series
Prelockdown trend (d) 0.00106 (0.000844) −0.0113*** (0.00165)
April 2020 5.683*** (1.190) 5.307*** (1.232) 7.198*** (1.236) 11.75*** (1.450)
May 2020 4.616*** (1.142) 4.207*** (1.190) 6.770*** (1.159) 11.68*** (1.403)
June 2020 3.172*** (0.820) 2.731*** (0.888) 4.970*** (0.858) 10.22*** (1.185)
July 2020 1.755** (0.759) 1.281 (0.837) 3.003*** (0.806) 8.597*** (1.155)
August 2020 1.798*** (0.688) 1.292* (0.785) 3.177*** (0.725) 9.114*** (1.142)
September 2020 3.639*** (0.610) 3.101*** (0.732) 5.267*** (0.647) 11.55*** (1.143)
Observations (number of tests) 34,438 34,438 16,552 16,552
R-squared 0.002 0.002 0.006 0.009
No. of clients 14,199 14,199 5575 5575
Average before lockdown 90.37 90.37 89.06 89.06

Data were analyzed at the viral load test level. Columns (1) and (2) include all clients with a viral load test at Mildmay clinic as of May 2018. Columns (3) and (4) include only clients with at least 1 test before the lockdown on March 25, 2020, and 1 test after the lockdown. Viral suppression is set to 1 if viral load measure was <200 copies/mL. Coefficients in columns (2) and (4) adjust for the prelockdown trend in the viral suppression. The government-mandated lockdown started on March 25 and ended on June 2, 2020. Standard errors, which are clustered by individual, are in parentheses.

***P < 0.01, **P < 0.05, *P < 0.1.