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Table 3 Age at enrolment and follow up of cohort (n = 3174 children)

From: Epidemiology of acute respiratory infections in children - preliminary results of a cohort in a rural north Indian community

Characteristics Boys Girls Total
  Nos. % Nos. % Nos. %
Age at enrolment       
 First year of life 259 (15.6) 253 (16.7) 512 (16.1)
 1–5 years 659 (39.7) 611 (40.4) 1270 (40.0)
 5–10 years 744 (44.8) 648 (42.9) 1392 (43.9)
 Total 1662 (52.4) 1512 (47.6) 3174 (100)
Weeks of surveillance       
 Up to 27 weeks 159 (9.6) 176 (11.6) 335 (10.6)
 28 to 35 weeks 97 (5.8) 107 (7.1) 204 (6.4)
 36 to 43 weeks 200 (12.0) 212 (14.0) 412 (13.0)
 44 to 47 weeks 275 (16.5) 240 (15.9) 515 (16.2)
 48 to 52 weeks 931 (56.0) 777 (51.4) 1708 (53.8)