def v200_defaults_statistics(defaults, runtime, harmonization, dry_run):
    """
    Inserting `statistics_*` parameters into defaults configuration file
    """
    values = {'statistics_database': 3, 'statistics_host': '127.0.0.1',
        'statistics_password': defaults.get('source_pipeline_password',
        None), 'statistics_port': 6379}
    changed = None
    for key, value in values.items():
        if key not in defaults:
            defaults[key] = value
            changed = True
    return changed, defaults, runtime, harmonization
