Pupil ID Number
Uniquely identifies duplicate observations
Visit
School ID of sampled child at time of visit
Standard (grade level) of sampled child at time of visit
Sampled child is male
Sampled child was observed at time of visit
Sampled child was present at time of visit
Total school participation observations  for a sampled child, 1998
Total observations where a sampled child was present, 1998
Average school participation, 1998
Total school participation observations  for a sampled child, 1999
Total observations where a sampled child was present, 1999
Average school participation, 1999
Total school participation observations for a sampled child, 1998 and 1999
Total observations where a sampled child was present, 1998 and 1999
Average school participation, 1998 and 1999
School ID of sampled child in Visit 1, 1998
Initial worm group, Jan 1998
Sampled child was in treatment Group 1, Jan 1998
Sampled child was in treatment Group 2, Jan 1998
Sampled child was in treatment Group 3, Jan 1998
Year of birth of sampled child
Indicator for boys (of any age) or girls (under 13 years) in 1998
Indicator for boys (of any age) or girls (under 13 years) in 1999
Grade progression of sampled child, Grade-(Age-6), Jan 1998
Sampled child was in a SAP Group 1 School, Jan 1998
Sampled child was in a SAP Group 2 School, Jan 1998
Sampled child was in a SAP Group 3 School, Jan 1998
Sampled child was in a SAP Group 4 School, Jan 1998
Standard (grade level) of sampled child in Visit 1, 1998
Date of interview
Months Since January 1998
Sampled child was observed within 6 months from the start of project
Sampled child was observed between 6 to 12 months from the start of project
Sampled child was observed after 12 months from the start of project