for training in assessment of sexual maturity and at AIIMS,
Delhi for rating of skeletal maturity component of the study,
which was carried out by CMC, Vellore; AIIMS, New Delhi and
Medical college, Jabalpur only. After the training each centre
sent 0 radiographs to ICMR, New Delhi to establish agreement
in the assessment of skeletal maturity by the three centres.
These 30 radiographs were circulated to the three centres
for blindfolded rating and returning to the Council for assessing
between centres agreement. This was ascertained by plotting
the rating done by each centre against others and calculating
Rank correlation co-efficient.
Data was collected by the project research staff of the
participating centred on pre-coded proformae prepared at the
council. Detailed instruction manual for recording information
including units of measurements were also prepared at the
Council and discussed and finalized at the project investigators
Overall coordination and data management:
The study was coordinated from the ICMR Hqrs. Office. The
data pertaining to the physical growth, sexual maturity and
psychological development was sent to the Council. The data
was computerized and screened for validity and consistency.
Rectification from participating centres were sought for missing
and inconsistent data periodically. The study was completed
in July, 1991. The skeletal maturity component of the study
carried out at only Jabalpur, Delhi and Vellore centres was
coordinated by CMC, Vellore. Data on skeletal maturity was
sent directly to CMC, Vellore.
statistical analysis for physical growth and sexual maturity
was carried out at ICMR Hqrs. Analysis of variance applied
to study between centres variation in physical growth indicated
significant differences. Therefore all analysis has been presented
centrewise. Mean values and standard deviations for all the
anthropometric parameters were calculated in six monthly age
groups. SPSS program was used to calculate percentiles centrewise
,3rd., lOth., 50th., 90th. and 97th. percentiles for weight
and height for boys and girls are presented. Physical growth
during adolescence in relation to earlier nutritional status
(5-7 years of age) was studied by comparing the growth in
different nutritional groups.
The children were categorized in 4 groups based on weight
for age from NCHS standards as follows4: