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Table 2 Study population characteristics

From: Reduction of malaria prevalence after introduction of artemisinin-combination-therapy in Mbeya Region, Tanzania: results from a cohort study with 6773 participants

Site Igurusi Mlowo Santylia Isongole Total
Number of participants 1126 1956 1802 1889 6773
Proportion of females; n/N (%) 593/1126 (0.53) 1027/1956 (0.53) 1001/1802 (0.56) 1045/1889 (0.55) 3666/6773 (0.54)
Median age at visit 1 in years (IQR) 16.5 (8.3; 36.1) 14.9 (7.8; 33.1) 16.0 (7.3; 34.2) 16.0 (7.8; 3.4) 15.7 (7.6; 34.7)
Bed net ownership; n/N (%)
 Visit 1 1030/1126 (91.5%) 646/1956 (33.0%) 0/1802 (0.0%) 4/1889 (0.2%) 1680/6773 (24.8%)
 Visit 2 998/1126 (88.6%) 796/1956 (40.7%) 32/1802 (1.8%) 31/1889 (1.6%) 1857/6773 (27.4%)
 Visit 3 1022/1083 (94.4%) 1033/1845 (56.0%) 0/1622 (0.0%) 27/1762 (1.5%) 1082/6312 (33.0%)
Change in bed net ownership (visit 1 to visit 2) − 3.1% + 23.2% NA + 681% + 10.5%
Median SES-score (IQR)
 Visit 1 0.01 (− 0.49; 0.64) 0.13 (− 0.23; 0.63) − 0.42 (− 0.75; − 0.06) − 0.36 (− 0.73; 0.00) − 0.17 (− 0.58; 0.23)
 Visit 2 − 0.02 (− 0.44; 0.54) 0.16 (− 0.25; 0.71) − 0.52 (− 0.82; − 0.14) − 0.42 (− 0.73; 0.14) − 0.21 (− 0.62; 0.32)
 Visit 3 0.06 (− 0.54; 0.61) 0.37 (− 0.13; 0.85) − 0.51 (− 0.84; − 0.02) − 0.37 (− 0.80; 0.20) − 0.14 (− 0.66; 0.45)
P. falciparum RDT positivity; n/N (%)
 Visit 1 82/1126 (7.3%) 60/1956 (3.1%) 7/1802 (0.4%) 17/1889 (0.9%) 166/6773 (2.5%)
 Visit 2 4/1126 (0.4%) 9/1956 (0.5%) 3/1802 (0.2%) 11/1889 (0.6%) 27/6773 (0.4%)
 Visit 3 9/980 (0.9%) 4/1670 (0.2%) 1/1447 (0.1%) 0/1479 (0.0%) 14/5576 (0.3%)
Change in RDT + (visit 1 to visit 2) (%) − 95.1 − 85.0 − 56.4 − 35.6 − 83.7