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. 2021 Apr 15;39(16):2303–2310. doi: 10.1016/j.vaccine.2021.02.043

Table 1.

Characteristics of participants analysed, by time point.

Time point PCV10 group PCV13 group Control group* p-value
Age, months 2 m 2.1 (1.9–2.4) 2.1 (1.9–2.4) 2.1 (2.0–2.5) >0.999
6 m 6.1 (5.7–6.9) 6.1 (5.7–7.0) 6.1 (5.0–6.8) >0.999
9 m 9.1 (9.0–10.1) 9.1 (8.8–10.1) 9.1 (9.0–11.2) 0.117
12 m 12.1 (12.0–14.0) 12.1 (11.8–13.1) 12.1 (12.0–13.2) >0.999
18 m 18.1 (17.9–20.9) 18.1 (17.7–20.0) 18.2 (17.4–20.3) 0.018
24 m 24.1 (23.9–25.9) 24.1 (23.6–28.3) 24.1 (23.4–26.9) 0.321
Any current breastfeeding 2 m 195/250 (78.0%) 194/250 (77.6%) 140/196 (71.4%) 0.208
6 m 129/243 (53.1%) 117/239 (49.0%) 91/193 (47.2%) 0.437
9 m 91/239 (38.1%) 88/235 (37.4%) 70/190 (36.8%) 0.966
12 m 71/231 (30.7%) 62/230 (27.0%) 52/188 (27.7%) 0.637
18 m 30/220 (13.6%) 28/218 (12.8%) 52/368 (14.1%) 0.908
24 m 9/205 (4.4%) 13/200 (6.5%) 10/170 (5.9%) 0.636
Presence of URTI symptoms 2 m 18/250 (7.2%) 14/251 (5.6%) 10/197 (5.1%) 0.603
6 m 43/243 (17.7%) 37/239 (15.5%) 27/193 (14.0%) 0.564
9 m 38/239 (15.9%) 51/235 (21.7%) 28/190 (14.7%) 0.118
12 m 50/231 (21.6%) 44/230 (19.1%) 34/188 (18.1%) 0.635
18 m 23/220 (10.5%) 35/218 (16.1%) 59/368 (16.0%) 0.134
24 m 31/205 (15.1%) 44/200 (22.0%) 20/170 (11.8%) 0.024
Antibiotic use in past fortnight 2 m 6/250 (2.4%) 12/251 (4.8%) 4/197 (2.0%) 0.178
6 m 21/243 (8.6%) 21/239 (8.8%) 17/193 (8.8%) 0.994
9 m 36/239 (15.1%) 41/235 (17.4%) 26/190 (13.7%) 0.551
12 m 25/231 (10.8%) 20/230 (8.7%) 22/188 (11.7%) 0.575
18 m 28/220 (12.7%) 25/218 (11.5%) 59/368 (16.0%) 0.255
24 m 18/205 (8.8%) 18/200 (9.0%) 22/170 (12.9%) 0.337
Current antibiotic use 2 m 3/250 (1.2%) 6/251 (2.4%) 4/197 (2.0%) 0.602
6 m 5/243 (2.1%) 9/239 (3.8%) 7/193 (3.6%) 0.684
9 m 10/239 (4.2%) 18/235 (7.7%) 5/190 (2.6%) 0.047
12 m 17/231 (7.4%) 14/230 (6.1%) 14/188 (7.4%) 0.820
18 m 13/220 (5.9%) 13/218 (6.0%) 17/368 (4.6%) 0.709
24 m 12/205 (5.9%) 9/200 (4.5%) 10/170 (5.9%) 0.788

Data are median (range) or n/N (%). p-values based on quantile regression with bootstrapped standard errors (for comparisons of medians) or chi-squared test (for comparisons of proportions). PCV = pneumococcal conjugate vaccine. PCV10 = ten-valent PCV. PCV13 = 13-valent PCV. URTI = upper respiratory tract infection (presence of runny nose and/or cough at the time of swab collection). *Data for controls comes from Group F (2–12 months), Groups F and G combined (18 months), or Group G (24 months). †Data missing for one participant.